Happens to me too. Restarting the computer fixes it for a while, but after some days it starts to happen again. (Yes, days, with the computer on or hibernating.) Never saw this with other versions of windows. I also suspect it has something to do with the nVidia driver (mine is 358.50). Do you have an integrated Intel graphics card in your system as well? I only encounter this problem on my laptop, and it also causes lots of other problems with other softwares, so who knows...
My system is similar to yours, but I use the MinGW version.
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