Are you trying to overclock your system? If yes, please be aware that we don’t support overclock, but you can get better assist at the following link:
Please run the Intel® Processor Diagnostic Tool , this software will tell you if there is any issue with the processor graphics.
Once you run the test you can post the results on this thread.
I’m not saying that you are overclocking, it was a question to try to isolate the issue, when you said that you underclock the processor it sounds like the frequency was too high, so that’s why I came up with the question.
Did you run the Intel® Processor Diagnostic Tool? If you do please post the results to better assist you.
Also, we will need the exact model of your processor.
I just wanted to check if you saw the information that was previously posted on this thread?
We need that information in order to further assist you.
Any questions, please let me know.