I recently bought an MSI Radeon 7950(Twin Frozr). From what I have looked up, all seems to be compatible. I have a retail computer, so I had to get a new power supply. The one I got was a 650W. It has all the required connectors. However, when I plugged everything in, my screen was unresponsive. It turned on just fine, but I could not see anything on the screen. So I am just wanting to know If I am overlooking something. If it isn't compatible, I'll buy a new motherboard. If something is genuinely messed up on my end, I, too, would like to know the reason. Thank you for anything.