I am pretty sure this is caused by DX. Try uninstalling it and installing the latest version. I noticed a lot of games and benchmarks install their own version DX, and it might have screwed things up in there. A modern GPU should not have any problems at all rendering 2D stuff. Might I suggest to try installing a clean copy of Windows and give that a go? All in all, I think the card is perfectly fine, it is certainly something to do with software/drivers.
this is a freshly installed version of windows, i'd really rather not go through that crap again, my connection is slow and most of my games are in steam.