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no signal with amd 6670, intel integrated hd works fine on projector

post #1 of 5
Thread Starter 
This is the weirdest thing. I unhook my amd hd 6670 and my i3 clardale intel hd works just fine, but when I put my amd hd 6670 into my computer I get no signal. I am running my PC to a Denon AVR to a projector with a 50 ft hdmi cable. The AMD 6670 will work just fine on a 1080p 23 inch monitor, but i get no signal at all on my projector. I go into info on my projector and it shows a crazy resolution that the PC is not set on. I vnc into the pc and make sure it's 1080p60 and it is but nothing on the screen. Updated to the newest AMD drivers tonight, tried numerous resolutions/refresh rates but i get nothing. Do any of you guys have any idea what could be causing this? I had the AMD 6670 plugged into a 65 inch plasma previously and it worked fine, but now on the projector i get no signal. I really would like to get the AMD working as I enjoy MadVR.

Any help would be greatly appreciated. I'm pulling my hair out here.
post #2 of 5
Do you see the bios post screen when booting up? or windows logo?
post #3 of 5
Thread Starter 
Yes I do. In fact when I vnc into the pc I can go into device manager and disable the AMD 6670 and I will get an 800x600 video that outputs to the projector. It's like something in the mix doesn't want to play well with others.
post #4 of 5
Is it possible to connect the PC directly to the projector? I wonder if the 50ft HDMI cable is the problem...
post #5 of 5
Thread Starter 
It will be difficult since the projector is ceiling mounted. The home cable has no issues with cables and with the pc if I use Intel hd video adapter. I'll give it a try.
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