Hdmi: No sink attached. Odroid C1+

First I need to say I’m 70% blind now. Doing this is so hard. 1/32″ letters? It’s hanging up on the subjects error. I’m really at a loss for words. I’ve tried unplugging device. Help… please.. I sure hope it’s easy, I have bad brain cancer. Not kidding.

Ok, back from radiation making me more blind. A few things I must say. This Hdmi wire is thick and was working before. I’ve google the hell out of this and got no answers. I bet I posted in the wrong area. Folks I just need help. It was working before what the hell?