This morning when I tried to start my computer, nothing happened.  At first, my computer started because I saw the Dell logo come on my screen.  Then my computer started beeping--5x--then it went to a black screen.  I turned it off and started it again but it just beeped 5x again, and went straight to a black screen--the Dell logo didn't even come across the screen this time.  Does anyone have a solution?  Could I have a virus?