Im not sure where to begin. I had a p4 2.4 with ic7-max 3 mobo, had two ata drives hooked up with 512k or pc3200 geil ram. I also ran an ati 9700 pro all in wonder. I decided it was time to upgrade and bought an ati x800 pro, one gig of geil ultra series ram 1 gb, and 2 sata drives. Well to make a long story short, all this was going into another case but it turned out that cases power switch didnt work (i was mad) after two hours of moving stuff, i had to move it all back. When i fired it all back up, there was smoke, and apparently the power at the floppy had arced a wire and it melted the covering instantly. It was just an extension to the power supply so i thought maybe i was ok. I replaced the floppy and proceeded. All appeared well in the beginning. I set up the system to run in raid and for the first night all went well. Then things went wrong. I play counterstrike, and it was freezing in game, but allowing me access to the in game menus. It would reboot my computer as soon as i exited the game. It finally came to where it wouldnt let me boot into windows saying system32/drivers/pci.sys was missing or corrupt. Well I then thought that maybe the video card or new ram was bad so I began testing with the old setup. I first put back in the old ram. Same problem. I then put back the old video card, same problem. I rehooked my old ata drive up and things actually worked which made me think it was one of the new hd's. Well that worked for a day and a half then it stopped working. (Nothing new was ever added to the old hd). Then i began thinking possible ps, so i went and bought a new ps, and still the same problem. My question is after this entire segment,,,,, do you think I have a bad mobo, a bad chip,,, something else is wrong? I am at my wit's end here as I have no idea where to go. I have built many computers and never had a problem this bad and I dont know what to do next.