Re: Monitor Vs Graphics Card Problem (ALH)
Hm, maybe it is the graphic card drawing more power and current from the power supplier, when enabling the two displays which combined with the fact of upgrading the proccessor(higher frequency also means more power for the cpu) makes voltages (+12V,+5V,3.3V) unstable when there is not enough power. How many watt is your PSU? And which graphic card you have got?
If the card is working with 1 display enabled(either vga or dvi output) then the card is ok and it should be a power problem or a drivers problem.