Sold a barebones pc today on craigslist. And fx8350, 8gb ram, case, psu, for $220, along with another set of old peripherals. Used a hard drive with windows on it to prove that it works, and to prove the specs. A few hours later he says it doesn't turn on. Says the fans don't even turn on. I asked basic questions (e.g. is the power supply switch on, which button is the power button, check all the connections). He says everything is plugged in, but it won't start. Any ideas? As the buyer, how do I know it wasnt damaged during transport to his house, or that he broke it? (Like putting a screwdriver against the motherboard while it was on. Thanks in advance.