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This is not a normal behavior, at the time you install the video driver it changes the graphics controller frequency, so it uses the maximum performance of the processor itself.
So it seems to be the processor defective that has the graphics controller damaged.
You may need to contact our support in order to replace your processor.
If you are using a VGA monitor with an adapter, that could be a problem. A DVI monitor with a DVI-HDMI adaptor should work as the conversion between DVI and HDMI is just mechanical, I believe.
I thought that the CPU might be faulty. It just didn't make sense that it would fail on the video driver load.