|Try with everything not essential disconnected, use onboard video, any nonessential cards removed, all externals unplugged except mouse and keyboard. Yes the green light is a good sign, but not conclusive. If you can borrow a power supply, or purchase one where you can get a promise of returning for a refund if it does not help, you would know for sure. Note also that a beep or series of beeps may indicate the problem. A long tone may mean a memory problem, but you can Google Beep tones for your board/BIOS and get a list. Post back results.|
You have to be a little bit crazy to keep you from going insane.