My computer won't start. I don't even get the slightest sign of life. I haven't installed any new hardware or software. A friend accidentally kicked the switch on my power strip and everything turned off. I turned the switch on and everything came back on except for my cpu. I'm fairly inexperienced when it comes to computers. I've tried to find my problem in the forums and all the other circumstances have other factors that mine does not; for example: new hard drives, three seconds of life, etc. I'm not sure what steps to take to figure out what the problem is. Please help.