So I put together a new PC yesterday and it has a Radeon 6870 in it. I connected it to my 23in LEDtv through HDMI and it worked first shot. After getting everything the way I wanted I decided to move my pc to its permanent location in a seperate room next to my bedroom. After hooking everything back up and turn it on my tv says invalid format. I did change my display settings before I turned it off because everything was so stretched out. It was on like 600x800 res I think and I changed it to 1280x 700 I think it was. How do I change it back if I cant see what I'm doing?
Yea, but I thought the input wouldnt have anything to do with hows its plugged in. If the resolution was wrong because of what I set it to on the pc wouldnt the tv know this no matter how it was connected whether through VGA or HDMI? Never used VGA so maybe it works differently?
The VGA may work differently. My friend tried plugging in his PC to his TV via HDMI and it got the same problem you did. Plugging into the VGA fixed it, even though it's a less glamorous way of connecting it, AND you'll need to separately connect the audio.