Blank screen after login

I logged in to my account and went away for a few minutes without looking at the screen before leaving. When I came back, the screen was completely blank and the light was blinking, so it was in a resting state, no worries. However, when I tried moving the cursor, hitting random buttons on keyboard, the screen lights up, but all I see is a blank screen. I ctrl alt del and log off from there, and then I log on again and this time it worked fine. Edit: I noticed that it comes every time the computer goes into idle state and the monitor temporarily turns off, and I get a black screen when I try to wake the computer. Help!

Maybe Your OS IS Damaged