What happens is, the IBM ThinkCentre M52 (model 8113-D5U) will show a POST error (which I've never once bothered to write down, as I already know the basic cause). Re-attempting to boot and entering the BIOS reveals that the "Video" setting under "Devices" has been automatically set to "PEG". Changing it to "PCI" allows the machine to boot with a 90% rate of success (it occasionally shows only a black screen and does not load an OS or the BIOS), but the damn thing frequently resets itself to the non-functional "PEG" setting, re-triggering its boot problems.
(For those who are not aware, "PEG" is a term for "PCIe" whose existence seems entirely pointless. "I MAKE UP UNNEEDED JARGON ACRONYM, I ARE SMART NOW? ")
So my question is, why does this piece of crap keep resetting its BIOS to use a completely non-functional video setting? And how do I stop it from doing so?
BTW I ran CPU-Z, and all it can tell me about my graphics is the two GPUs are both called "Intel(R) 82945G Express Chipset Family".
EDIT: I should note: when the problems first started, the machine used "IGD" as the video setting. I changed that to "PCI" and now the video problem only manifests when the damn thing changes itself back to "PEG".
None.