[PC] Game hangs on my system

I bought that game from steam, and i think it’s great, but i have huge problem with it - it’s totally hangs on my system some times (especially when you do maximal zoom in in battle mode), so only thing i can do - hardware reset.
Last crash was followed with vertical black bars on the screen - it just seemed like videocard is died (very scary). But reset is helped as always.
Here is my system info:
CPU: Intel Core I7 2600K
GPU: AMD Radeon 6950
OS: Windows 7 x64
dl.dropbox.com/u/8273848/systeminfo.nfo - for windows system info tool
dl.dropbox.com/u/8273848/errors.txt - also, game error file

Never had something like this in any other games.
I hope for your help

Thanks in advance