you could try uninstalling and reinstalling the drivers for your graphics card. Make sure to download the latest drivers from the ASRock website. You could also try resetting your graphics card settings to their default values.
If that doesn't help, you could try testing your graphics card in another computer to see if you experience the same issues. If the same issues persist, it is likely that there is a hardware problem with the graphics card. If you are still experiencing issues after trying these steps, you may want to contact ASRock support or the retailer you purchased the graphics card from for further assistance. They may be able to provide more specific troubleshooting steps or determine if the graphics card needs to be replaced.