Hi, I have a similar problem. Recently I had an error as windows was starting to load, it said "Missing NTLDR" (or similar). I looked around on the net abit and most solutions were to repair windows XP using the instalation. So I poped that in and started to repair it. It deleated some files reinstalled some then restarted.
There is no NTLDR error, then letting it boot from the hard drive it started loading files for XP.
After I agree to the licence agreement it starts to "Installing devises" once this about a third of the way the monitor starts to flicker at intervals of about 5-10 seconds, then the mouse stops working, starts working, then stops. At the end of "Installing devices the mouse starts to work again and the BSOD comes up with:
IRQL_NOT_LESS_OR_EQUAL