I've seen this mentioned a few times on here. I think its a graphics card fault. You need to uninstall your graphics card drivers and reinstall them again.
Or reseat your graphics card.
I'll shunt this post back to the top of list and see if someone with more PC skills agree's or puts me right.
Hang back until my ideas confirmed or corrected because I'm not 100% sure.
Also try using the search option on this site.