I have a athlon 2 630 gigabyte ma78lm board 4gb ram 5750 video card and 500 watt psu. My card is brand new. Sometimes when i restart the machine the card does not give a signal to the monitor. If i then switch to inbuilt card it works perfectly. Same thing happened with old system changed everything except ram. Any clues
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Do you disable the onboard output when you use iether system?