I have checked my voltages and temperatures for the graphics card and my Ruzen 9 3900X. All are well within the normal range. I am concerned that the graphics driver or Radeon software is the culprit. I have the latest Radeon Adrenalin software installed. I used Windows 10 Pro Programs and features in Control Panel to delete the old driver. I rebooted and installed the latest driver . I even checked off during the install to do a reset of manufactuers default settings on the card. I have followed the same method over the past year since I bought my Radeon VII new from AMD on this site after its launch.