HIS Radeon hd 6670 hdmi drops when windows loads

gdmdtd

Honorable
Feb 24, 2013
4
0
10,510
Hello,
I just got a HIS Radeon HD 6670. I plug it into my HD TV and I get to loading windows then I get no signal. This only happens using the HDMI port, I connect the DVI to HDMI cable and it load the screen. Can anyone help with the correct settings I should use.