Since they are scanning and more, the hardware is suspect in my view. I've see all of this from bad ram and in spite of the owner exclaiming temperature is fine, we do the usual work anyway. Even a new GPU needs this. Why? Read http://www.tomshardware.com/reviews/radeon-r9-290x-thermal-paste-efficiency,3678-3.html (and there are many others to cover that topic.)
There's also a little indication to me that the power supply could be overtaxed or there is bad ram or another issue at play that has corrupted the OS on the drive.
I have posted another topic on bleepingcomputer about this I just want some extra help as responses could be slow...
error code 800B0100 and error code 80070570 when trying to update