I had this issue before. The fans keep running, the light are on. I did not notice any burn marks. When I pust the button on the monitor, it said to push any key to turn on out of the powersafe mode. Ithink it may be my power supply. I do here it running as well. This happened before and I did several things and it worked again. The computer was turning on and working only when unplugging it. I am running windows vista.
