K4sum1

So I actually didn't inf mod initially, but I did manually install the M2000M drivers, and that worked. Although for this install I went and modified nvdmi.inf and replaced the M1000M listing with the M2200 (iirc nvdmi is the Dell inf?)
Installing XP again, there are a few major devices without drivers. For example the I217-LM in my M4800 has no XP driver, and so does the Intel 7260 WiFi. WiFi should be easy to get working because you can swap it with a XP compatible card, but the wired LAN can't be easily replaced. I210/I211 might work with a driver mod, but I had a modded driver with I217 listed in its inf and it didn't work.
Also if you go too new, you end up with the issue of needing Serial IO drivers for the trackpad, which is a pain on 7 let alone XP.
Edit: Found working I217/I218 drivers. Nothing for I210/I211 though.

It kinda just worked for me, I didn't need to inf mod or anything. I'll do more proper testing soon. I did notice a weird issue running Java, but I'm not sure if that was from transferring the SSD with XP between like 4 different machines before ending up in the laptop.

I have a M4800 upgraded with the M2200, it appeared to work under XP but I didn't get around to testing any 3D applications. I would suggest getting something Ivy Bridge, 8570W/8770W or M4700/M6700 for better XP/Vista compatibility

Depends on your laptop, if you have the option, go for it. But if it's a Dell it should've automatically disabled it when in XP, because that's what my M4800 did.

Well, if the other ACPIs you used worked, that means your GPU uses Optimus, which Vista and earlier can't use. Causes the code 10.

I doubt you will get a secondary GPU working ACPI or not, but here you go.
https://files.catbox.moe/w8mm0d.7z