Well this is a brand knew problem I recently got a new video card 550 ti but I can only play games for a couple minutes then the screen gets multicolor artifacts and it crashes to black screen and I have to hard reset. You guys have prolly seen this before but I have tried so many solutions, disabling sound drivers, driver reinstall, etc. I do use driversweeper when I update.
When you say you reinstalled the drivers can you be more specific, what are the steps you took?
Did you use a disk or did you download it from somewhere and which version?
Did you know the latest version is 270.61 WHQL?
Also can you check device manager to see if there is any errors or disabled drivers?