|For what it is worth your mother board is an MSI RS482. Link below.|
Your issue is unusual. I have never heard of something like that. First off, have you checked the VGA socket to see if it can move on the board at all?
Is the system usable as is? If so, check the refresh rate of the display.
Is there a heat sink fan on the chip set? If so, is the heat sink and fan secure?
I can't even guess why this would happen. Did this condition happen all of a sudden?
Do all other functions of the motherboard seem to be OK?
Try installing a temperature and voltage monitoring program to see if voltages are within specs. Try speedfan or CPUID.