I tried to uninstall the nvidia drivers, but the control panel still lists "Nvidia Driver" when I go to uninstall programs. After I did this, I physically removed the card and replaced it with the 5770.
Another thing I realized is that when I started the computer up again, the fan from the 5770 gets louder and louder. After keeping the computer open for about 30 min, I opened up my computer again, and the 5770 was really hot to the touch.
Do you think my mother board is incompatible.