Posting this on behalf of a friend who will be watching the thread:
"Hi,
My girlfriends computer randomly started displaying lots of yellow/blue dots all over the screen yesterday. The computer was idle while she made food and when she returned, the problem was there. I asked her for some GPU-Z screenshots and got these:
http://gpuz.techpowerup.com/13/12/02/3nt.png
http://gpuz.techpowerup.com/13/12/02/2cy.png
From what i know, everything looks fine except for the yellow dots of course. Other than this i had her try various standard things. The problem isnt there when booting into safe-mode, so i told her to update her drivers to the latest version but the problem persists even after uninstalling, running driver sweeper and then installing the newest drivers. It gets much worse if she tries to run a game, with display driver crashes and such. She even described how the screen got split into two even triangles with different colors, at some point. She lives 4 hours away and i dont have the option to travel there at the moment so i have to go off her descriptions.
Thanks for reading."