Wanting to set up a tv as a second monitor. I have an HDMI cable connecting my desktop to TV and in my display settings it has "Display device on VGA" even though I don't have a VGA cable in there anywhere. It also has resolution highest as 1600x1200 instead of its normal 1920x1080.

I think the only important thing to mention is graphics card? AMD Radeon HD 7800 is what I have and the drivers are all up to date. I am sure it has a working HDMI port and my cable is brand new. I also have the input set properly. I've read something like making sure you have auto detect for HDMI or something in bios? I'm not really sure what do.