Can you please post your dxdiag report here? There is some more information I would like to check from your system.
I recommend you updating the bios in your system by using the software provided by your computer manufacturer. You can check that at the following link:
After upgrading the bios in your system, I recommend you checking for firmware update for your AV receiver. Once this is done, try installing the monitor driver and then installing again the latest graphics driver from our side at the following link: