1. Updating GPU drivers does not work then downgrade GPU drivers by 2. Check if issue persist. If it happens , update once more. (1 below latest)
If still does not work. Go to step 2.
2. Re seat rams slot, gpu slots. If issue persists, > step 3.
3. Test with another gpu. If issue persists, > step 4.
4. Run in save mode with networking, open your usual programs eg, chrome, open lol etc.... Still happens , prepare to buy new parts.
5. 80% psu , 20% mainboard