Monitor Problem

[ceb]

Hey!

So i have been experiencing a sudden problem with my computer screen.
While i'm playing a game(currently Battlefield 3 Beta), watching something
in my browser or watching a movie the screen suddenly shuts down and enters
sleep mode. I can still hear sound and the computer acts normal.
The only way to get the image back is to restart the computer.
I've tried to uninstall and update my drivers but the problem is still there.
The screen i'm using is the Samsung SyncMaster 2233BW 22".

For your information, i've recently bought new hardware.

Intel i5 2500K 3.3Ghz (no OC atm)
Asus P8P67
XFX Radeon HD 6950 2GB
Corsair XMS3 1600Mhz CL9 8GB
Antec Küler H20 620

// Ceb

 

[ceb]

What is your psu?

Corsair AX650W, sorry for leaving that out.

 

[ceb]

Ok your rig seems nicely balanced.
In control panel click on power options
then select maximum performance mode.

My friend tipped me to do that yesterday and after that the screen
didn't die for the rest of the day. Earlier today, it happend again.