I have had this problem for a few months now and can't finde the answer to it, so i hope someone can help here.

My computer screen goes black randomly, and when it goes black it stays black for a few seconds 2-5 sec. When it goes black the Monitor light stays green and i can move the mouse pointer and see it move with no problem but the screen is black.

I have tryed formating my HD, reinstalling Windows XP and than the Video and Monitor Drivers. And i have notest something the problem always comes after installing NVIDIA Drivers, I have tryed all of them, old drives brand new drivers and same problem.

Some other things i have tryed,: Diferent Monitors and Drives -Same problem. After Formating HD and reinstalling OS I only installed Monitor Drivers not the NVIDIA Video CArd Drives and keept it like this for 4 days and no problem.

My Video card is 2 years old and it worked fine before on same OS Win XP Pro.

Should i Replace the Video Card?

Here are my SPECs:

Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 1 Build 2600
Motherboard VIA694
Processor AMD ~1535 Mhz
Video: NVIDIA GeForce4 MX 420 64MB
768 MB RAM