Suddenly, the screen looses the signal from the PC and goes black. (I get a glimse of a screen saying that ther is no signal). The PC is still running but now the lights on the two DVD drives are flashing. There are no discs in these two drives. It's like the computer is searching for something that isn't there. I can't see the two hard drives, due to the way the machine is constructed. So I don't know if any access lights are flashing. But, the system has locked up. Control-Alt-Delete does nothing! I have to hold the start button in until the machine stops. When I restart, sometimes it starts up normally, other times is launches into the balck screen and flashing light show and I have to hold the start button in, again.
Any ideas? Does this sound like a malicious worm or some other malware, or do I have a haredware problem?
Thanks for any help.