My computer screen randomly goes black?

it goes black and then i need to click the on botton again and start all over! i dont know whats going on!!!!! is it a virus? my computer has blue screened a couple times in the past but all of a suden this has been happening and now its more often!

I have an Acer computer with Viewsonic computer screen, has been working fine up until half an hour ago. Now when I turn the computer screen on it works, but after a few seconds the screen goes black but the blue light that indicates the computer screen...

my computer was working fine last night, however i left it on whilst i went out for like an hour. i came back and all the programs i had on jammed and it crashed. so i tried to switch the computer off, by 'start' and 'turn off computer' however that...

Here's the stuff that's happening: After leaving my PC unattended long enough for the screen to go black, I move the mouse to bring the screen back. It stays on for about 3-5 seconds, then goes extremely dim in a way you'd think it was entirely black...

My computer screen goes black every 10 seconds.Is this a virus? because I heard that if your screen goes black then its a rootkit virus.But mines turns on and when it does you can see the screen for a while then goes black.And it makes a screeching noise...

ok so i recently bought a compaq computer and it has windows vista. ok so you know when you dont go on the computer 4 like 5 minutes the computer screen goes black and then you have to wiggle the mouse to make the screen come back. i want to know how...

Yesterday, my monitor went black and the sound went off when playing deus ex human revolution on my desktop. After that I tried skyrim and splinter cell conviction, and it turns off almost instantly when the game starts (not at main menu). I can still...

I have an old dell dimension e510 that despite its age has been running really nice lately. Last night I'm on the internet just browsing the web. All of a sudden internet explorer freezes and when i click the mouse my computer beeps. Then the monitor...

The computer itself appears to be fine but when on the monitor when you start up the computer you can see the startup screen, then the welcome, and user screen for about two seconds and then the monitor goes to black. The monitor light is on like normal...