I'm having a bit of trouble with a laptop. I got the laptop from a friend who said he was having problems with the laptop shutting down spontaneously. The first time the laptop started, it seemed to run fine for about 20 minutes, at which point it froze. I turned it off by holding down the power button. I tried to start the laptop again, but now whenever i try to start it, it won't boot. All that happens is the fans turn on; No hdd light, and the screen stays off too. I suspect possible heat damage, but I don't know how to tell for sure. I might be doing something wrong... Any suggestions??