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#1
I don't use Nvidia cards but that is the source of the problem. Something to do with Nvidia experience, etc. There are several hits on Google about it. It may be something as simple as updating your video card.
NvBackend.exe is a part of nVidia GeForce Experience - an optional (and unnecessary) component.
Reinstall your nVidia video card driver (download the newest one, if yours is not). While installing it request a clean install and make sure to reject GeForce Experience install.
Last edited by AndreyT; 06 Mar 2016 at 20:10.