Hello everybody! So basically Ive been using my RX 480 which has 2xHDMI, 2xDP and 1xDVI-D ports through my DVI port and never noticed any problems. Today I wanted to connect a monitor through one of the HDMI ports of my GPU and theres no signal at all. I tried every single port of the GPU, both the HDMIs, the DPs and the DVI.. The only ports that arent showing any signal are the 2 HDMI ports. What could cause the problem? Any ideas? Other than that I havent noticed any problems with the GPU, it`s working fine with any other of the ports.
In Device Manager are there any Yellow Exclamation marks under "Display" or Error messages when connected with HDMI cables to HDMI Monitor?
Have you tried a different HDMI Cable in case it is defective?
Disconnect all Video Outputs cables except one HDMI cable connected to your HDMI Monitor from your GPU card. Does it work now?
Here some websites on how to fix HDMI Outputs not working . They are all similar:
Also try this: