Hi, before our new Dell R710 Server goes live , i would like to play with and see him to run Windows 2000 for fun. But i failed at setup : STOP 0x0000001E (0xC0000005,0x80F69A95,0x00000000,0x00000038) KMODE_EXCEPTION_NOT_HANDLED Address 0x80F69A95 base at 0x80F64000, ...., hall.dll The box is Intel 5520 Chipset, 2 x Xeon X5647, 32GB, Bios 6.1.0 (Phienix) I already tried to -disable all unneeded devices in bios, -disable all prefech / cache settings / C-States .. -tried to setup Server/Workstation (SP4 SRP1) -replaced many system files with newer ones (scsiport, hal(xxx).dll, ntosxxx.exe, pci.sys, acpi.sys ....) -tried some different OsLoadOptions (/MAXMEM /ONECPU /PCILOCK) -run setup from CD and PXE-boot from RIS Server -switched to different ntdetect.com (XP/2003 versions) -removed all scsi drivers from txtsetup.sif -forced setup to load different hal.dll (halmacpi.dll is loaded by default) -tried different halmacpi.dll versions (5.00.2195.6691,..,5.0.2195.7006) The setup hangs forever (hal.dll, halmps.dll = [OK]) or always run into BSOD STOP 0x0000001E (halacpi.dll , halmacpi.dll) just after loading drivers (Textmode: "Setup is starting Windows 2000") I guess there is no bug in bios (xp an up runs fine) but something unexpected for W2K , so hal.dll will crash. (perhaps @HalpValidPCISlot , cmp edx, [ecx+38h] - for assembler experts) I'm unable to fix this BSOD, any suggestion is welcome. @blackwingcat (if you read this) !!!!!!many thaks for your work!!!!!!!!!!! I also tried your videoprt.sys , but in this case setup aborts with the message : "vga.sys is corrupt." ?!? I guess we must not switch to this version before W2K is installed? THX