Unfortunately, this motherboard is out of support since December 2012 Desktop Boards — End of interactive support announcement � December 2012
It is important for you to know that depending on the type of add-in card installed in the PCI Express x16 connector, the HDMI port will be disabled. Same thing happened with the DVI-I port. You will be able to find additional information on the TPS.
In order to have Dual display on this board, you would need to use the HDMI and DVI-I ports, or get a video card that supports the connection for 2 monitors.
If you are going to use the onboard graphics please make sure you are using the correct graphic driver. Please choose the operating system you are using and download the latest version Download Center
Also, check if you have the latest BIOS version installed, is not please download it from the following link Download Center
Finally, this is the correct way of clearing the CMOS on Intel Motherboards