Damnation

@Dietmar OK, thanks for testing. let me try a few things...

@Dietmar There are some IoResource functions in my ntoskrn8.sys Perhaps it's getting stuck there? does loading my ntoskrn8.pdb show anything?

@Dietmar Maybe load the symbols for my HAL and see if that gives more information?

@Dietmar hmmm. so it's not even getting to the ACPI table finding code I added to my HAL. IoReleaseVpbSpinLock wouldn't be the cause would it?

@Dietmar Have you finished with ACPI testing on the HP laptop as of yet? If you have, would you mind trying to trace this 7E BSOD?

@George King Can you run H2testw on it to confirm that it is legit? I'll be genuinely surprised if it is as these are usually scams. https://h2testw.org/ A video showing H2testw in action. https://youtu.be/SI0m7nVn2Tk?t=444

@George King I would have my doubts that NVMe SSD is actually 2TB if it only cost $20 Have you tested for it's actual capacity?

@SEDANEH If this is for the integrated motherboard GPU your only option in XP is a generic 2D only driver. http://bearwindows.zcm.com.au/vbempk.zip If it's for an nvidia or AMD card you can just get the drivers from their websites.

@user57 PCI DeviceID's are more useful than names when looking for drivers. A PCI device might have the same name as another but be of a different hardware revision, which is why you should look for the DeviceID.

@Dietmar Do you only have access to 1 CPU core there? also, did Mov come up with a solution in acpi.sys source code for this?

@SEDANEH You're welcome! we're always willing to help!

@SEDANEH Just focus on getting the essential devices working, namely GPU, sound and networking for now.

@SEDANEH That's odd, I've never seen XP give a 7B error AFTER booting. Are you sure it was a 7B BSOD?

@SEDANEH Glad that you finally got XP installed! Integrated GPU won't have a proper XP driver, get an nvidia GT 710 that has XP drivers.

@OldSchool38 Have you got a pic of the BSOD? There are community made drivers for XP out there for newer hardware, it should be possible to get it working.

@SEDANEH I made a prepatched XP ISO for you. https://easyupload.io/2d87ov

@TheLeftOldComputer Have you heard of XP Integral Edition? It has an optional patch integrator script included with it that has community made patches that will resolve both your AHCI and ACPI issues.

@SEDANEH The pic looks like you're installing on a HP laptop now? Weren't you trying to install on an ASUS Z790 motherboard?

@Dietmar That's what I'm saying - add this code in to your HP DSDT table and then try and boot with it. leave out the lenovo tables. https://msfn.org/board/topic/183464-compiling-acpi-v20-driver-for-windows-xp-sp3-and-windows-2003-sp2-x32x64/?do=findComment&comment=1259789

@Dietmar Not the lenovo DSDT table. I meant just adding the missing ADR code for PRT4 into the HP laptops own DSDT table and see if it helps, that might resolve the 0xA5 0x0D BSOD you've been having.

That's what the optional patch integrator script is for. or you can use dietmar's prepatched ISO.

@Dietmar If you can load different ACPI table now, maybe try the DSDT modification you thought of earlier and see if it works? https://msfn.org/board/topic/183464-compiling-acpi-v20-driver-for-windows-xp-sp3-and-windows-2003-sp2-x32x64/?do=findComment&comment=1259789

@Dietmar Oh nice! thats good news!

@Dietmar Try the acpi table patcher included with agfm bundled with Easy2boot? I recall that it worked for me when I made a temporary table fix for ACPI0007 and CPU power.

@Dietmar If we can get this working it might help with that HP laptop thats been giving you trouble. Have you got a spare PC that you can use to debug this?