Hello,
You may try the common troubleshooting such as;
- Update/Re-install your graphic drivers.
- Disable Hardware acceleration in your graphic card settings.
- If you are trying to view videos online;
>> Update your browser.
>> Clear your browsing history, cache, temporary internet files.
>> Update your flash player
>> Update your media players (such as VLC player, etc).
>> Disable hardware acceleration in your browser's settings.