The laptop is a Prostar 4054. The computer was running normal when I turned it off at the end of the day. Next morning, I turn it on and the power indicator LED turns from amber to green and the CD drive LED flashes. At this point, everything stops. No beeps, screen remains blank, and I do not notice any HD activity. If I allow it sit this way, the fans will turn on after a few minutes, but that is all. I've tried running from the AC adapter/battery, battery only, and AC adapter only, in all 3 conditions I'm met with the same problem. Any suggestions would be greatly appreciated. Thank you.