My Compaq Presario CQ56 screen is black when I turn on my laptop. I can hear it running & the power button lights up but screen does nothing just stays black. It was working when I turned it off to go to school but when I came home & turned it on I got the black screen. How can I fix it? Also a friend tried to hook it up to a monitor so I could still use it but that wouldn't work either. He said it was because of some setting I didn't have turned on before my laptop went to the black screen of death. Is there a way to hook up my laptop to a different screen so I can still use it.