Very anoying video card glitch

[czplayer]

Hi a few months ago I about a new nvidia 6200 gfx card and when I installed it and the new drivers and everything these small black rectangles started appearing on my screen randomly and I switched back to my onboard card and
there wasnt any can any body help me ? the picture shows what they look like

 

[AlbertLionheart]

Make sure you have installed the latest drivers for the nvidia card - if you have installed them and these marks still appear then the card is faulty.

 

[czplayer]

Hmm I'm gonna check for new drivers and if it's still like this I'm going to return
it and get a better one cuz this one sucks anyways