I have an AsRock P4i945GC motherboard being used in a system for a younger sibling (speccy report). I was hoping to use an hd 5450 for the system but there isn't any video being outputted from the video card and is instead being displayed from the onboard GMA 950. I installed the latest bios update that added support for ati 5xxx video card but it still doesn't work. Thinking the PCI-E slot might be bad, I then put in my GTX 645 and the system shows video from the video card. I pulled the card out and switched it for a hd 4670 and like the 5450 there was no video either. Pulling the CMOS battery and factory resetting the board had no effect and I don't know why the nvidia card worked but 2 amd cards didnt. Any assistance is greatly appreciated!