I recently moved and now my AOC monitor isn't receiving an HDMI signal from my prebuilt i-series R164A663 PC. The monitor turns on fine by itself, and the PC seems to function normally too. However, I notice a red light on the top of the PC that flashes and then stays red for about a minute. There's a cylinder-shaped symbol above this light. I've tried using different HDMI cables that I know work in other setups and plugged them into different ports on the PC. I really need help figuring this out. If you need more details, just ask!
1 Answer
HDMI connections can be pretty finicky. It's possible that either the HDMI port on the GPU or the monitor might be damaged. I suggest testing the monitor with something like a Blu-ray player or a streaming stick to see if it works with those devices. If it does, that might mean the HDMI port on your GPU is faulty, and switching to a DisplayPort could help. If you have both ports available, that would be a good way to troubleshoot further. Otherwise, you may need to get a proper adapter for conversion from HDMI to DisplayPort, but remember it has to be an active adapter. Confirm what’s causing the issue first, then take it from there.

I tried connecting the monitor with an HDMI to DP cable, but it’s still not working. My PC only has an HDMI port, and I plugged it in there with the DP going to the monitor. I’ve got a feeling the light on the PC might be a problem too. What do you think? This is urgent since I have important info on that PC!