not overclocked, he's got the following:
shuttle U35N Ultra
corsair value 512mb
AXP mobile 2400+
all stock, bios using optimized AND fail safe, both get errors
HDD is OK, check that using Spin Rite
Ram was swapped out... not that (might be slot thought, testing that tonight)
power supply has been faithful in another box
case seems fine
he only has one video card, so he can't swap it out
here's the weird stuff... he has 3 Winblows CDs, 2 are normal Windows Pro, and one has SP2 incorporated into it. On the 2 normal Windows Pro CDs, he gets to the first reboot and the box freezes and reboots. On the SP2 incorporated CD he gets a "cannot copy file" error on same file every time. You'd think it was this particular CD, but that's the CD I've used many many times with no problems. All CDs are *cough* backups on CDR.
I personally think it's the CD-Rom or the Ram slot or BIOS. We're flashing BIOS, swapping cd-roms, and switching ram slots tonight. Well, he is, I'm trying to help him from 3000 miles away.