The glorious video card, it’s an amazing thing, really. It makes all those pretty HDR pictures look just that good, it keeps your games running smoothly, and your videos in HD. Yet these things can be pains when they’re just not working right, because if something is wrong there’s not a strict hardware or software solution, you have to analyze the current situation to see what’s up.
Geforce-8800-Ultra-Video-Card
First and foremost if you’re having any problems with your video card, probably the best thing to try to do first is see if there an updated driver for it at the manufacturer’s website that may solve the problem, or if there isn’t an update try uninstalling your video card drivers and reinstalling them this little action can solve so many problems.

If there’s little jaggies or weird colorful mishaps known as artifacts appearing (explained in better detail by screenshot) on your screen you may want to check the temperature of your video card and make sure is getting enough cooling, and that the fan is working properly.
Video-Card-Artifacting
If the cooling checks out okay you may also want to check your power supply ratings to see if it is giving enough juice to your video card. Nowadays most video cards need a lot of power on the 12v rails, make sure your power supply can give you that power that the video card needs.

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