Why do you assume its the gpu? Why not ram?
But post your specs here and do some troubleshooting. What where you doing, gaming? Windows?
Try the card in another computer. Disable the xmp profile. Do some stress tests. Re seat the card. Check for drive errors or corruptions. Check temps. Try windows in safe mode. DDU drivers and reinstall.
These are things you can try.
Good luck
The Englishman