Could you try the card in another system ?
I updated my video card and power supply about a Month ago, everything worked fine. A couple of days ago I got a bsod that the video wasn't responding. Rebooted and could hear the machine start the keyboard lit up etc but nothing on the screen. I thought maybe the new videoncard went bad so I installed the old one and still nothing. The computer does work however from the integrated video on the motherboard. this leads me to suspect the socket on the mother board is there anyway to check it?
The motherboard is an acer g43t-am how do I determine a Suitable replacement/upgrade?