hmmm if the other computers work it is not something about the power...

I had a unstable computer, it couldn't decompress anythyng due to CRC errors, scans showed memory corruption, solution? the memory resulted to be overclocked, if yours is, it may lead to data corruption at long term, check it out.

Edit:

A little piece of advice: in my case I didn't personally overclock the memory, but I installed a new motherboard which accidentally overclocked my memory for being too old, just check the current processor and RAM clock and which should their standard clocking be

Maybe it could be overclocked new memory, but I don't know what to do about that. The bios says something about 800mhz front side bus but I got the memory supposedly for this motherboard and it doesn't complain on boot. I mean maybe the speeds don't match up but...

Basically, I don't get how anything at all can work if there's some problem with something like memory speeds.

I've now tried three different pieces of ram in different slots, 3 different cd/dvd drives, two different ide cables, two different hard drives, two different power supplys, two different windows xp cds...

At this point, I think I've probably damaged something else swapping things in and out so much.

I mean if one of those three different pieces of ram isn't damaged, is it possibly that it could work but produce random file copying errors due to some speed mismatch? That doesn't seem likely.

There's also still blue screens of different types. I don't want to screw with it anymore. Unless someone suggests something totally different, I give up.

The processor had just always been bad and must have just been getting worse. I replaced it and now everything runs. Cdrom, memory, power supply, hard drives, cds, motherboard, it was all apparently fine.