Computer freezes in games, graphic card the issue?

Hey all, I have had this issue for a few days now and I think its the graphic card causing it.

Currently im using a Nvidia 560 Ti and last few days when I try to play some semi graphic intensive games I keep getting the "graphic driver stopped responding and has recovered" every single time, and if I continue playing after I get that warning, after a few minutes the entire computer freezes and I need to do a hard reboot. I have tried different games and I have this issue on games like Skyrim, Far Cry 3, Assassins Creed 4. However other games that is less graphic intensive such as Starbound, Eve Online, all works fine, I can watch 1080p movies all fine aswell. Note that this started just a few days ago, I have been able to play all those games above without a problem for a long time.

I have tried various things like checking temperature (which is fine, howers around 50 degrees in games), I have tried updating drivers to latest beta drivers and other various settings in the nvidia control panel, without success.

So my question is, is there other things I could try, and is my graphic card really the issue? I have ment to upgrade it, and maybe it is time, if yes any suggestions? Im a fan of Nvidia and I have been thinking about the GFX 770 one.

Thank you in advance

Edit: I did not try downgrading, im downloading version 331.65 at the moment to give it a try.

Try completely uninstalling the graphics driver. Run CCleaner to fix any registry errors. Also try reseating the card.

I use Revo Uninstaller when I uninstall stuff so it removes all left overs.
Can you explain what you mean with resetting the card?

Reseating not resetting. Take it out the slot on the motherboard and put it back in.

Oh I see what you mean, I will try that after I tried this downgraded drivers.
Thank you

None of the two options made a difference, I suspect the card is just broken, partially it seems :/