I have recently purchased an Amptron ECS K7VZA--200FSB ATA66(cheap but it got good reviews), a 1GHz Athlon, and some memory in hopes of upgrading my old system. I also purchased a new ATX case to put them all in. To make a long story short, after applying power, the processor burned out(visible burn marks). I couldn't imagine what could've gone wrong(I've built several systems before and followed instructions exactly), so I took it to a tech shop. They said that it was only the processor that burned, and that I had probably gotten a bad processor. I returned the processor, got a new one, placed it in the slot, got video output for about 2sec, and it burned as well. Now I'm trying to figure out what the @#%& could be wrong!!!?? and I need your guys' help. I'm assuming(very strongly) that it's the power supply. It is a relatively cheap one(box+ps=$50), but what are the chances that a bad PS will only burn a powersupply??(Everything is fine AFAIK). The shop that tested it after the first attempt tried a Duron, rather than an Athlon. SO...Could a bad powersupply burn out an Athlon, but not a Duron??!!! If not, I'm guessing they must have used their own PS for testing?? Could it be the MB by chance?