New
#11
Also make sure uninstalling drivers completely for Graphics card. I just meant updating system drivers, not uninstalling them or reverting to older ones again, whichever. Any external devices try without them. Doubtful it's a monitor cable, would happen from movement around area PC is in or most of the time. Something is conflicting software or drivers other way is safe mode or clean boot. Told you of possible shell extensions,try Ccleaner and disable all third party extensions and try clean boot.
http://windowsinstructed.com/clean-boot-windows-windows/
http://www.piriform.com/ccleaner