Small white squares on the screen

Chiller123451

Honorable
Aug 27, 2012
12
0
10,510
Hi,

My PC at work have a NVIDIA Quadro 4000 gfx card and it was working fine. But recently, suddenly the screen goes black with small white squares all over the screen and then comes back to the desktop page and starts to work normal. In happens 3-4 times a day for the last 4 days.

Then today the same thing happened but then got the blue screen. Was not using the PC at the time.

Any reasons why this might be happening?

Thanks