Updated drivers for Windows XP SP3 and Windows 2003 SP2 (x32/x64) for modern hardware

**reboot12** · June 22

https://pastebin.com/kNtEgwaX - i2cctrl.log from WinXP

Screenshots from Win8.1 before and after installing I2C driver:

Edited June 24 by reboot12

**UsefulAGKHelper** · June 22

7 hours ago, reboot12 said:

[22/06/2026, 10:58 AM] DriverEntry begin
[22/06/2026, 10:58 AM] DriverEntry complete (mask=0x00000009)
[22/06/2026, 10:58 AM] AddDevice: begin
[22/06/2026, 10:58 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 10:58 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 10:58 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 10:58 AM] AddDevice: ControllerId assigned = 1
[22/06/2026, 10:58 AM] AddDevice: complete (Ctrl1)
[22/06/2026, 10:58 AM] StartDevice: entered
[22/06/2026, 10:58 AM] StartDevice: PnpId captured
[22/06/2026, 10:58 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 10:58 AM] StartDevice: got translated resources
[22/06/2026, 10:58 AM] StartDevice: MMIO mapped
[22/06/2026, 10:58 AM] BAR0[00] = 0x00000065
[22/06/2026, 10:58 AM] BAR0[04] = 0x00000000
[22/06/2026, 10:58 AM] BAR0[08] = 0x00000055
[22/06/2026, 10:58 AM] BAR0[0C] = 0x00000001
[22/06/2026, 10:58 AM] BAR0[10] = 0x00000000
[22/06/2026, 10:58 AM] BAR0[14] = 0x0000028f
[22/06/2026, 10:58 AM] BAR0[18] = 0x000002ba
[22/06/2026, 10:58 AM] BAR0[1C] = 0x00000071
[22/06/2026, 10:58 AM] BAR0[20] = 0x000000ce
[22/06/2026, 10:58 AM] BAR0[24] = 0x0000000f
[22/06/2026, 10:58 AM] BAR0[28] = 0x00000033
[22/06/2026, 10:58 AM] BAR0[2C] = 0x00000000
[22/06/2026, 10:58 AM] BAR0[30] = 0x00000000
[22/06/2026, 10:58 AM] BAR0[34] = 0x00000011
[22/06/2026, 10:58 AM] BAR0[38] = 0x00000000
[22/06/2026, 10:58 AM] BAR0[3C] = 0x00000000
[22/06/2026, 10:58 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 10:58 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 10:58 AM] StartDevice: disable did not latch
[22/06/2026, 10:58 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 10:58 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 10:58 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 10:58 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 10:58 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFFDC8E190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 10:58 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 10:58 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 10:58 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 10:58 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 10:58 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 10:59 AM] AddDevice: begin
[22/06/2026, 10:59 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 10:59 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 10:59 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 10:59 AM] AddDevice: ControllerId assigned = 2
[22/06/2026, 10:59 AM] AddDevice: complete (Ctrl2)
[22/06/2026, 10:59 AM] StartDevice: entered
[22/06/2026, 10:59 AM] StartDevice: PnpId captured
[22/06/2026, 10:59 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 10:59 AM] StartDevice: got translated resources
[22/06/2026, 10:59 AM] StartDevice: MMIO mapped
[22/06/2026, 10:59 AM] BAR0[00] = 0x00000065
[22/06/2026, 10:59 AM] BAR0[04] = 0x0000006e
[22/06/2026, 10:59 AM] BAR0[08] = 0x00000055
[22/06/2026, 10:59 AM] BAR0[0C] = 0x00000001
[22/06/2026, 10:59 AM] BAR0[10] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[14] = 0x0000028f
[22/06/2026, 10:59 AM] BAR0[18] = 0x000002ba
[22/06/2026, 10:59 AM] BAR0[1C] = 0x00000071
[22/06/2026, 10:59 AM] BAR0[20] = 0x000000ce
[22/06/2026, 10:59 AM] BAR0[24] = 0x0000000f
[22/06/2026, 10:59 AM] BAR0[28] = 0x00000033
[22/06/2026, 10:59 AM] BAR0[2C] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[30] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[34] = 0x00000711
[22/06/2026, 10:59 AM] BAR0[38] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[3C] = 0x00000000
[22/06/2026, 10:59 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 10:59 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 10:59 AM] StartDevice: disable did not latch
[22/06/2026, 10:59 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 10:59 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 10:59 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 10:59 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 10:59 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFFDC8F190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 10:59 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 10:59 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 10:59 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 10:59 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 10:59 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 10:59 AM] AddDevice: begin
[22/06/2026, 10:59 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 10:59 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 10:59 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 10:59 AM] AddDevice: ControllerId assigned = 3
[22/06/2026, 10:59 AM] AddDevice: complete (Ctrl3)
[22/06/2026, 10:59 AM] StartDevice: entered
[22/06/2026, 10:59 AM] StartDevice: PnpId captured
[22/06/2026, 10:59 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 10:59 AM] StartDevice: got translated resources
[22/06/2026, 10:59 AM] StartDevice: MMIO mapped
[22/06/2026, 10:59 AM] BAR0[00] = 0x00000065
[22/06/2026, 10:59 AM] BAR0[04] = 0x0000006b
[22/06/2026, 10:59 AM] BAR0[08] = 0x00000055
[22/06/2026, 10:59 AM] BAR0[0C] = 0x00000001
[22/06/2026, 10:59 AM] BAR0[10] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[14] = 0x0000028f
[22/06/2026, 10:59 AM] BAR0[18] = 0x000002ba
[22/06/2026, 10:59 AM] BAR0[1C] = 0x00000071
[22/06/2026, 10:59 AM] BAR0[20] = 0x000000ce
[22/06/2026, 10:59 AM] BAR0[24] = 0x0000003d
[22/06/2026, 10:59 AM] BAR0[28] = 0x00000016
[22/06/2026, 10:59 AM] BAR0[2C] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[30] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[34] = 0x00000711
[22/06/2026, 10:59 AM] BAR0[38] = 0x00000000
[22/06/2026, 10:59 AM] BAR0[3C] = 0x00000000
[22/06/2026, 10:59 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 10:59 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 10:59 AM] StartDevice: disable did not latch
[22/06/2026, 10:59 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 10:59 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 10:59 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 10:59 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 10:59 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFFDC64190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 10:59 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 10:59 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 10:59 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 10:59 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 10:59 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:00 AM] AddDevice: begin
[22/06/2026, 11:00 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:00 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:00 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:00 AM] AddDevice: ControllerId assigned = 4
[22/06/2026, 11:00 AM] AddDevice: complete (Ctrl4)
[22/06/2026, 11:00 AM] StartDevice: entered
[22/06/2026, 11:00 AM] StartDevice: PnpId captured
[22/06/2026, 11:00 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:00 AM] StartDevice: got translated resources
[22/06/2026, 11:00 AM] StartDevice: MMIO mapped
[22/06/2026, 11:00 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:00 AM] BAR0[04] = 0x0000002c
[22/06/2026, 11:00 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:00 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:00 AM] BAR0[10] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:00 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:00 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:00 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:00 AM] BAR0[24] = 0x0000003d
[22/06/2026, 11:00 AM] BAR0[28] = 0x00000016
[22/06/2026, 11:00 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[34] = 0x00000711
[22/06/2026, 11:00 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:00 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:00 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:00 AM] StartDevice: disable did not latch
[22/06/2026, 11:00 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:00 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:00 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:00 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:00 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFFDC88190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:00 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:00 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:00 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:00 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:00 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:00 AM] AddDevice: begin
[22/06/2026, 11:00 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:00 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:00 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:00 AM] AddDevice: ControllerId assigned = 5
[22/06/2026, 11:00 AM] AddDevice: complete (Ctrl5)
[22/06/2026, 11:00 AM] StartDevice: entered
[22/06/2026, 11:00 AM] StartDevice: PnpId captured
[22/06/2026, 11:00 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:00 AM] StartDevice: got translated resources
[22/06/2026, 11:00 AM] StartDevice: MMIO mapped
[22/06/2026, 11:00 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:00 AM] BAR0[04] = 0x0000005e
[22/06/2026, 11:00 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:00 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:00 AM] BAR0[10] = 0x000000a0
[22/06/2026, 11:00 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:00 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:00 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:00 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:00 AM] BAR0[24] = 0x0000003d
[22/06/2026, 11:00 AM] BAR0[28] = 0x00000016
[22/06/2026, 11:00 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[34] = 0x00000011
[22/06/2026, 11:00 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:00 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:00 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:00 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:00 AM] StartDevice: disable did not latch
[22/06/2026, 11:00 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:00 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:00 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:00 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:00 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFFDC67190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:00 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:00 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:00 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:00 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:00 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:04 AM] AddDevice: begin
[22/06/2026, 11:04 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:04 AM] AddDevice: HWID candidate: ACPI\8086228A
[22/06/2026, 11:04 AM] AddDevice: HWID candidate: *8086228A
[22/06/2026, 11:04 AM] AddDevice: unsupported controller, skipping
[22/06/2026, 11:05 AM] AddDevice: begin
[22/06/2026, 11:05 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:05 AM] AddDevice: HWID candidate: ACPI\8086228A
[22/06/2026, 11:05 AM] AddDevice: HWID candidate: *8086228A
[22/06/2026, 11:05 AM] AddDevice: unsupported controller, skipping
[22/06/2026, 11:06 AM] AddDevice: begin
[22/06/2026, 11:06 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:06 AM] AddDevice: HWID candidate: ACPI\8086228A
[22/06/2026, 11:06 AM] AddDevice: HWID candidate: *8086228A
[22/06/2026, 11:06 AM] AddDevice: unsupported controller, skipping
[22/06/2026, 11:08 AM] DriverEntry begin
[22/06/2026, 11:08 AM] DriverEntry complete (mask=0x00000009)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\8086228A
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: *8086228A
[22/06/2026, 11:08 AM] AddDevice: unsupported controller, skipping
[22/06/2026, 11:08 AM] DriverEntry begin
[22/06/2026, 11:08 AM] DriverEntry complete (mask=0x00000009)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:08 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:08 AM] AddDevice: ControllerId assigned = 1
[22/06/2026, 11:08 AM] AddDevice: complete (Ctrl1)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:08 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:08 AM] AddDevice: ControllerId assigned = 2
[22/06/2026, 11:08 AM] AddDevice: complete (Ctrl2)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:08 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:08 AM] AddDevice: ControllerId assigned = 3
[22/06/2026, 11:08 AM] AddDevice: complete (Ctrl3)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:08 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:08 AM] AddDevice: ControllerId assigned = 4
[22/06/2026, 11:08 AM] AddDevice: complete (Ctrl4)
[22/06/2026, 11:08 AM] AddDevice: begin
[22/06/2026, 11:08 AM] AddDevice: scanning HWIDs for controller match
[22/06/2026, 11:08 AM] AddDevice: HWID candidate: ACPI\808622C1
[22/06/2026, 11:08 AM] AddDevice: matched controller ACPI\808622C1 (index 39)
[22/06/2026, 11:08 AM] AddDevice: ControllerId assigned = 5
[22/06/2026, 11:08 AM] AddDevice: complete (Ctrl5)
[22/06/2026, 11:08 AM] StartDevice: entered
[22/06/2026, 11:08 AM] StartDevice: PnpId captured
[22/06/2026, 11:08 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:08 AM] StartDevice: got translated resources
[22/06/2026, 11:08 AM] StartDevice: MMIO mapped
[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:08 AM] BAR0[04] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:08 AM] BAR0[10] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:08 AM] BAR0[24] = 0x0000000f
[22/06/2026, 11:08 AM] BAR0[28] = 0x00000033
[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[34] = 0x00000011
[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:08 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:08 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:08 AM] StartDevice: disable did not latch
[22/06/2026, 11:08 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:08 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:08 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:08 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFCFBA26C0 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:08 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:08 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:08 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:08 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:08 AM] StartDevice: entered
[22/06/2026, 11:08 AM] StartDevice: PnpId captured
[22/06/2026, 11:08 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:08 AM] StartDevice: got translated resources
[22/06/2026, 11:08 AM] StartDevice: MMIO mapped
[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:08 AM] BAR0[04] = 0x0000006e
[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:08 AM] BAR0[10] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:08 AM] BAR0[24] = 0x0000000f
[22/06/2026, 11:08 AM] BAR0[28] = 0x00000033
[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[34] = 0x00000711
[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:08 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:08 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:08 AM] StartDevice: disable did not latch
[22/06/2026, 11:08 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:08 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:08 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:08 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFCFBA16C0 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:08 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:08 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:08 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:08 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:08 AM] StartDevice: entered
[22/06/2026, 11:08 AM] StartDevice: PnpId captured
[22/06/2026, 11:08 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:08 AM] StartDevice: got translated resources
[22/06/2026, 11:08 AM] StartDevice: MMIO mapped
[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:08 AM] BAR0[04] = 0x0000006b
[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:08 AM] BAR0[10] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:08 AM] BAR0[24] = 0x0000003d
[22/06/2026, 11:08 AM] BAR0[28] = 0x00000016
[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[34] = 0x00000711
[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:08 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:08 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:08 AM] StartDevice: disable did not latch
[22/06/2026, 11:08 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:08 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:08 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:08 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFD0E166C0 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:08 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:08 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:08 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:08 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:08 AM] StartDevice: entered
[22/06/2026, 11:08 AM] StartDevice: PnpId captured
[22/06/2026, 11:08 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:08 AM] StartDevice: got translated resources
[22/06/2026, 11:08 AM] StartDevice: MMIO mapped
[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:08 AM] BAR0[04] = 0x0000002c
[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:08 AM] BAR0[10] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:08 AM] BAR0[24] = 0x0000003d
[22/06/2026, 11:08 AM] BAR0[28] = 0x00000016
[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[34] = 0x00000711
[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:08 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:08 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:08 AM] StartDevice: disable did not latch
[22/06/2026, 11:08 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:08 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:08 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:08 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFCEB636C0 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:08 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:08 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:08 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:08 AM] Deenumerate: done (Deleted=0, Remaining=0)
[22/06/2026, 11:08 AM] StartDevice: entered
[22/06/2026, 11:08 AM] StartDevice: PnpId captured
[22/06/2026, 11:08 AM] StartDevice: matched controller ACPI\808622C1 (BAR0 Offsets: CTRL=00 STAT=04 DATA=08 CLK=0C, quirks=0x8 bsod=0x0)
[22/06/2026, 11:08 AM] StartDevice: got translated resources
[22/06/2026, 11:08 AM] StartDevice: MMIO mapped
[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065
[22/06/2026, 11:08 AM] BAR0[04] = 0x0000005e
[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055
[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001
[22/06/2026, 11:08 AM] BAR0[10] = 0x000000a0
[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f
[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba
[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071
[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce
[22/06/2026, 11:08 AM] BAR0[24] = 0x0000003d
[22/06/2026, 11:08 AM] BAR0[28] = 0x00000016
[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[34] = 0x00000011
[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000
[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000
[22/06/2026, 11:08 AM] StartDevice: no LPSS BAR2 resource
[22/06/2026, 11:08 AM] WaitForEnableState: timeout expired (targetOn=0)
[22/06/2026, 11:08 AM] StartDevice: disable did not latch
[22/06/2026, 11:08 AM] StartCompletion: calling I2cCtrl_CreateI2cDevice()
[22/06/2026, 11:08 AM] CreateI2cDevice: begin (enumerate + classify)
[22/06/2026, 11:08 AM] CreateI2cDevice: no children -> Enumerate
[22/06/2026, 11:08 AM] Enumerate: begin for controller HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] FindAcpiPdo: FDO invalid (Ext=0xFFFFFADFCEA02190 Sig=0x46444f20 Removed=0 Stopping=0 Surprise=0 Started=0 PnpId="ACPI\808622C1" HardwareId="<null>" InstanceId="<null>")
[22/06/2026, 11:08 AM] AcpiOpen: no ACPI PDO found for HWID=ACPI\808622C1
[22/06/2026, 11:08 AM] Enumerate: AcpiOpen failed (0xc0000225)
[22/06/2026, 11:08 AM] CreateI2cDevice: enumeration produced no children
[22/06/2026, 11:08 AM] Deenumerate: begin (NumChildren=0)
[22/06/2026, 11:08 AM] Deenumerate: done (Deleted=0, Remaining=0)

Screenshots from Win8.1 before and after installing I2C driver:

so your speakers (hardware ID) are from realtek, good to now, I already have a template for realtek backend but it's empty so far. I will try to implement it better when I have time
how does the log look like on XP?

Edited June 22 by UsefulAGKHelper

**UsefulAGKHelper** · June 22

@reboot12

https://github.com/UsefulVideos/I2C-Controller-XP/releases/tag/build-20260622-204550

Implemented support for some missing HW IDs.

Also included i2cctrl_helper.cpl.

**reboot12** · June 22

@UsefulAGKHelper

Still no Realtek I2S device detected.

Do these drivers work and get the job done on your Asus laptop? Do they initialize devices connected via I2C?

**UsefulAGKHelper** · June 22

1 hour ago, reboot12 said:

@UsefulAGKHelper

Still no Realtek I2S device detected.

Do these drivers work and get the job done on your Asus laptop? Do they initialize devices connected via I2C?

It's even worse for my case... because I don't even know how to run acpi ssdt tables .aml from Clover to ensure that my controller is powered on.... (Windows OSI version limit thanks to firmware, it enables and disables values according to OSI)

use the SLIC tool to check what acpi tables XP does load for you and check for all informations of your device in the ACPI tables (if it's on a acpi table not loaded by XP, then that explains the issue too).

Until then, no ACPI I2C enumeration works for now (mostly my case, yours may just need correct MMIO mapping IDK), not even for me (unless I fake it by enumerating it directly from i2cctrl instead of ACPI, but that would be a fake/virtual device and not the real thing, i'd rather focus on the real device than a virtual device).

Keep in mind that this driver was intended to be used on XP (it's adjusted to what it can do on XP) and not on later versions (meaning that it's pure WDM, no KMDF dependency, no sbpcx, no acpiex)...

And if you ask why I use i2cctrl.log, it's obvious, this is the only hardware with I2C that I have (it doesn't have serial port, ethernet port for debugging). On crashes I debug the crash in windbg in win11 from xp's memory.dmp (on the same hardware), while outside of BSOD through i2cctrl.log.

My controller is I2C IO Cannon Lake based on LPSS, yours is I2C EC based on DW, so maybe the mechanism isn't even the same for you compared to me.

Edited June 22 by UsefulAGKHelper

**UsefulAGKHelper** · June 22

@reboot12 My Clover (UEFI)'s config.plist...

https://www.mediafire.com/file/sgrjiyvyi0s9eez/config.plist/file

**UsefulAGKHelper** · July 7

@reboot12

Quote

[22/06/2026, 11:08 AM] BAR0[00] = 0x00000065

[22/06/2026, 11:08 AM] BAR0[04] = 0x0000005e

[22/06/2026, 11:08 AM] BAR0[08] = 0x00000055

[22/06/2026, 11:08 AM] BAR0[0C] = 0x00000001

[22/06/2026, 11:08 AM] BAR0[10] = 0x000000a0

[22/06/2026, 11:08 AM] BAR0[14] = 0x0000028f

[22/06/2026, 11:08 AM] BAR0[18] = 0x000002ba

[22/06/2026, 11:08 AM] BAR0[1C] = 0x00000071

[22/06/2026, 11:08 AM] BAR0[20] = 0x000000ce

[22/06/2026, 11:08 AM] BAR0[24] = 0x0000003d

[22/06/2026, 11:08 AM] BAR0[28] = 0x00000016

[22/06/2026, 11:08 AM] BAR0[2C] = 0x00000000

[22/06/2026, 11:08 AM] BAR0[30] = 0x00000000

[22/06/2026, 11:08 AM] BAR0[34] = 0x00000011

[22/06/2026, 11:08 AM] BAR0[38] = 0x00000000

[22/06/2026, 11:08 AM] BAR0[3C] = 0x00000000

BAR0 is detected I see, unlike in my case.

That means that the detection code on my i2cctrl.sys driver is not broken, the firmware maybe enables and disables controllers (power state of the controllers) based on OSI!

If you want to get this to work, we are gonna need help improving the ACPI 2.0 from Mov0xDead to add support, because even if OSI would be correct, our current XP's ACPI 2.0 still doesn't understand this at all!

@Dietmar This is where you come in, do you want to help me adding I2C/GPIO/UART support in XP's ACPI 2.0 from mov0xdead? Even making sure that it reports as Windows 2015 (Windows 10) and above in the OSI if necessary. My driver has a lot of XP-friendly implementations (this means that no KMDF, no acpiex and no spbcx), it tries to use I2C in XP's language, it also has a lot of unused garbage code that it's just sitting there tbh.

Edited July 7 by UsefulAGKHelper

**AlexIon** · Tuesday at 10:02 PM

Hello guys

Thanks for all your hard work on this fantastic project.

Is there a Windows XP ISO available with all of the modified drivers already integrated?

**AlexIon** · Tuesday at 10:16 PM

On 3/28/2026 at 4:31 AM, user57 said:

to be honest you wasted a lot of your energy in win2000 questions in the past, a lot of time that is now missing here

Just imagine if Windows 2000 were a rational human being. After reading this, it would probably get furious and reclaim every line of code it gave to Windows XP.

XP would be left like a book with all its pages ripped out ,nothing but the cover and a handful of rough drafts :no: .

**user57** · 2026-07-15T02:06:38Z

its getting off topic
but
you have probaly a wrong thinking about this

there is a succesor system in this win2k question

there was windows me - what where kinda bugged, also win9x dos direction stuff
there was nt 4.0 and 5.0 - where these had a 32 bit base and no dos like 98 or ME
then 5.0 was made to win2k

so with XP it was about to get compatibility back and future on
so in win2k you rather got a office look - it where slower then 9x aka win98 maybe me
it was stable but
there was also this VXD driver question
a big problem there was that the go from user to supervisor mode where slow
here XP could point because instead of int 2e - xp used the sysenter command (what is a lot faster) (while still can do the int 2e method too)
also the entire nt 5.0 was improved - more function - while keeping compatibility - and more speed
so 5.1 aka xp was the clear successor to win2k
5.2 dont really exit - its a xp they made with some server functions - its not bad but its not a real new invention

then there was the vista question 6.0
slow, incompatible, parts where bugged
that got fixed with 7
aka 6.1 - so 7 has more, is faster and more stable

these are the successors the the subversions

the most people got the code open source - if you want it for win2k you have it in your hands

when i looked on firefox 110 i saw over 300 missing functions - thats basicly a lot
dibya then said he want to change it "inside the code"
probaly resulting in *6 the changes
that being said these things are hard to make - its not like we could go there and just fix it in a few hours
that e3kskoy7wqk guy has gone for that type of solution - it are really a lot of changes

so what do you think ?

**AlexIon** · 2026-07-15T09:40:39Z

7 hours ago, user57 said:

its getting off topic
but
you have probaly a wrong thinking about this

there is a succesor system in this win2k question

there was windows me - what where kinda bugged, also win9x dos direction stuff
there was nt 4.0 and 5.0 - where these had a 32 bit base and no dos like 98 or ME
then 5.0 was made to win2k

so with XP it was about to get compatibility back and future on
so in win2k you rather got a office look - it where slower then 9x aka win98 maybe me
it was stable but
there was also this VXD driver question
a big problem there was that the go from user to supervisor mode where slow
here XP could point because instead of int 2e - xp used the sysenter command (what is a lot faster) (while still can do the int 2e method too)
also the entire nt 5.0 was improved - more function - while keeping compatibility - and more speed
so 5.1 aka xp was the clear successor to win2k
5.2 dont really exit - its a xp they made with some server functions - its not bad but its not a real new invention

then there was the vista question 6.0
slow, incompatible, parts where bugged
that got fixed with 7
aka 6.1 - so 7 has more, is faster and more stable

these are the successors the the subversions

the most people got the code open source - if you want it for win2k you have it in your hands

when i looked on firefox 110 i saw over 300 missing functions - thats basicly a lot
dibya then said he want to change it "inside the code"
probaly resulting in *6 the changes
that being said these things are hard to make - its not like we could go there and just fix it in a few hours
that e3kskoy7wqk guy has gone for that type of solution - it are really a lot of changes

so what do you think ?

I agree. but WinXP NT 5.1 wasn't a completely rewritten kernel or user mode environment; technically it was very close to Win2000 NT 5.0. Windows 2000 was already a super stable NT system, If Microsoft had not considered marketing and business reasons, XP could have been seen more like a major service pack or extended update of Windows 2000. XP added many new functions,, and compatibility improvements while keeping the same core NT 5.x foundation. The Windows 2000 community has already ported XP's ACPI and HAL to Windows 2000, and they work, showing how similar the two systems are internally. This is not the same situation as Vista to Windows 7, where Microsoft made much deeper changes. I think yeah this is a bit offtopic, but I really enjoy these kinds of discussions about the 2000s era.

**UsefulAGKHelper** · 2026-07-15T18:01:46Z

@reboot12 Just so you know feel free to fork my repository of i2cctrl (do whatever change you want there) and also ask dietmar to help with the building of new acpi files.

Your controller is already turned on in your case, so you might have a chance.

Edited 18 hours ago by UsefulAGKHelper

**reboot12** · 2026-07-15T21:22:48Z

@UsefulAGKHelper

I used a Dell 3040 to test the eMMC driver and it worked, but the computer has poor parameters to use it for anything specific :no: , so I don't care about I2C support. I'm basically not interested in laptops and unusual mini-computers.

Besides, my goal was to add UEFI, NVMe, USB3 and ACPI support to WinXP 64-bit and I managed to achieve it, so overall the goal was achieved. I think I've had enough and don't want to continue patching - anyway, there's a lack of testers and too little interest

I've done a lot anyway:

I added UEFI boot support
I added basic UEFI NVRAM Boot Menu editing support
I added restart from OS to UEFI firmware
I patched kdcom.dll and bootvid.dll to easy debugging
I patched hal.dll for restart working
I successfully tested booting from the eMMC disk

I have my favorite modern desktop WinXP 64-bit computer with all working devices (full drivers) - 8 Gen CPU, 16 GB RAM, an NVMe drive from which it boots in 18 seconds + PCIe graphics card with working 3D and a large 2K monitor, sound, network.

The motherboard in this computer does not limit me like a laptop or some unusual mini-computer with soldered CPU, RAM or eMMC disk:

I decide which keyboard and mouse I will use - PS/2 or USB
I decide whether I will use a SATA or NVMe drive
I decide which graphics, sound and network card I will use - PCI or PCIe
I decide what processor and how much RAM I will use
I have COM ports for debugging

Edited 14 hours ago by reboot12

**Malkovicius** · 2026-07-16T10:10:22Z

Hi everyone, hi @Dietmar,

I'm a retrocomputing enthusiast and I've been following this thread with great interest. I'd like to ask for some help from the community.

Would anyone be able to share a complete collection of all the modified x64 acpi.sys builds released so far for Windows XP x64? I've only been able to piece together a partial version history across various threads, and I'd like to test them systematically on two machines:

- ASUS F540LJ-XX028T — Intel Core i3-4005U (Haswell, 4th gen), 4GB DDR3L, Intel HD Graphics 4400 + NVIDIA GT 920M
- Lenovo ThinkCentre M73 Tiny — Intel Core i7-4765T (Haswell, 4th gen)

Which modified x64 acpi.sys build is currently considered best/most stable for 4th generation Intel (Haswell) hardware? I've seen references to the 5048 series, the 7777.x revisions, and some "A5x11+A5x03" variants, but I haven't found a clear recommendation specifically for Haswell.

On Windows XP x86, I had good success on the same ASUS Haswell laptop with two builds: "5048 - 2019.11.1 - diderius6" and "5.1.2600.6666 - 23.10.2020". I'd like to replicate similar results on x64 now.

I'm also aware from this thread that the modified intelppm.sys can cause a measurable performance drop on some CPUs (saw the report on Broadwell) — happy to benchmark this on my Haswell hardware too if that data point is useful.

Thanks in advance to anyone who can help — happy to share test results/logs from both machines.

Edited 2 hours ago by Malkovicius

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