I seem to be having issues as well, possibly due to the Z77 chipset. I have a Sabertooth Z77 which I bought alongside my Windforce for a new PC build in early August, and have had quite a few problems. First off, the computer crashed and the GPU fans went at 100% when it had to render any games that I had on high settings. That seemed to fix itself after I reseated the GPU again.
Now, I regularly (once a day normally) have the screen lose output and have to restart it. On occasion when I'm in the desktop I hear a notification sound just as the screen goes back but obviously can't read it. Normally I can restart and its fine, but there was at least one occasion when the computer wouldn't work for a week. Its happened again today and restarting isn't working anymore either.
Is this the same problem that others have been having? Considering how random this issue is it would be nice to at least know what is causing it. Contacted Gigabyte TS hoping that they are able to give me an answer, fingers crossed.