Constant some-sort-of-fatal-crashes in some games!

[Grovyle]

Hi.
When I play Monster Trucks Nitro or The Sims 3, the screen will turn black, the monitor will say "No Signal" and then it shuts off. If I try to turn on the monitor again, it says no signal once again and it turns off. The only hope I have is to reset the computer AND THEN turn it off (reseting isn't enough).
What the hell is happening? I never had this kind of problems before. :conf:

When does it happen in TS3:
When I play it for 5 minutes straight.

When does it happen in Monster Trucks Nitro:

When I press UP Arrow and then DOWN Arrow at the same time.

[brainiac220]

i had this problem too , but i dont know how the hell i solve it , i forgot , try to reinstall you're windows maybe :/ 

[Dave]

The monitor disconnect from th ePc, I had this with my Windoes at one point, as soon as my Pc started my monitor cut out due to my graphics card and driver. I would recommend rolling back windows a few days to get rid of any updates etc, if that doesn't work then reinstall your graphics drivers if you have an dedicated graphics card.