Just wondering if anyone has any clue as to what might have caused my computer to totally stop booting up. I was trying to play a game of Ghost Recon and it totally froze up. So I turned the power off. Turned it back on, but no luck, couldn't even get bios to come up, just a black screen. The computer was humming, but it appeared to be registering no activity. I've tried it periodically since then, but the same thing keeps happening. Any input would be great!