When i was using my desktop computer, somet hing appears on the screen, it is a blue screen with a messege on it. All i can remember are the words "first time restart your computer" and then if not "press f8 into safe mode", i really dont know what to do about that problem so i turn off the avr. And then, when i open it again, the monitor says no signal and the system unit keeps beeping. Please, what is the problem? Can i do something to fix it?