Try downloading the DX11 webinstaller.
If that doesn't work download Coretemp and run Prime95, make sure that overclock is stable. Then run MSI Kombustor in DX11 with AA on max.
I Underclocked my CPU back down to 3.3 or so . I ran Prime 95 for 20 mins. I also dont see temps on my CPU reach any Higher than 55 and my Gpu never has gotten higher than 50 so far. I ran Kombuster, but I will give it another go. I just received an Email from blizzard wanting my DXDIAG and MSINFO so I sent it to them.