How to use HDMI & DVI at the same time...

I just built a new PC and installed a Sapphire RADEON HD 6670 1gb DDR5...

I want to run two monitors (extended) using the DVI and HDMI ports. I just get a black screen on the second monitor??
 

cliffordcooley

Posts: 12,494   +5,868
Which operating system are you using?
Do you have an option to extend desktop in Windows display properties?

If you are using Windows 7 try pressing "Windows Key + P" at the same time. This should bring up a projection menu with 4 options.