So the other day i bought a GTX 780 ti for parts on ebay. When it came It loaded up completely fine untill I installed nvidia drivers onto it, then it stopped booting after that and my screen was covered in purple lines. Then after I decided to reflow and the card, the card now boots with "drivers" installed. But when ever i check for driver updates it says that the latest ones are installed but i still need to download those latest drivers (see pictures) and the screen is still covered in these purple lines. When I try to launch up games it says that the drivers are either not found or updated. I've DDU'd multiple times in (safe mode and without safe mode) and reinstalled but it doesn't seem to fix the issue.
If anyone knows anything about this, your help would be greatly appreciated.