Hello im having problems , im new and hope i can get some help ty.

I purchased key clone and I own 2 world of warcraft accounts.
I watched a tutorial on setting up keyclone.
I launched keyclone and my 2 windows popped up so i entered the accounts , i pressed enter and both accounts started to load.
Once the game loaded one account screen froze while the other account screen went black.
I was using 2 warlocks and I was pressing some keys and i could hear sound , it seems they the accounts were working.
Anyways after a few seconds my video card crashes and recovers , still frozen and black screens.
....................
Now I tried to launch 1 wow account without keyclone and that account follows the same pattern it freezes up, so now i cant play wow at all.

Im using windows 7 64-bit
12 gigs of ram
Nividia gforce GTX 560 ti

Seems to be a video card problem but im not sure, I have ran key clone before about 3 years ago on another older machine without any problems.

Thank you for the help in advance.

i figured it out had to lower the resolution works fine now