im running a biostar 560 mobo. i have a 5000 BE in it. and a X700 radion graphics card in it. when i boot up the video on my monitor, will go out on boot. it takes a few times to get it to boot with a screen. (monitor is only 1 year old, and power supply is a 500 ultra X-connect with 34a on the 12 volt rail, so i think those are fine). could my video card be bad? the card is about 4 years old. plz help