@Alex4033
Don't panic just yet! Read that thread that was linked, and I had post#2.
1) Your AVR seems to be stuck in some sort of "Demo Mode", with the way that info just keeps scrolling across it. You need to browse the manual or the forums to figure out how to get it out of that demo mode.
2) I have had similar problems on my Pio Elite VSX-82 over the years. Every time, it was simply figuring out which button to hit on the remote to correct this problem! I've had my cat step on the remote and kill my audio but video worked, or kill my video while audio kept working.
I'm giving you a greater than 50% chance that you have some setting or config that got out of whack by mistake, and as soon as you find the button on the remote, you will get it going again!
First time this happened to me, it took me a while to figure out!
Here is my info from that other thread that was linked here. This one was dealing with the audio problem, for ME on MY Pio, I believe the "Signal Select" button controls the audio, while "Video" controls the video signal, but I'm not sitting in front of it right now. Also, you may have the signal set to "analog video", where it needs to be "digital" or "auto".
Time again and again....we need to get Gene to set up a sticky for "Pio Elite No Audio".
Look for a "Signal Select Button" on your remote and push it a few time to cycle through the options. Probably something like "Analog, Digital, Auto". It is very likely that you accidentally hit that button, you are feeding the AVR a digi signal via HDMI, but you accidentally hit that button and told the AVR that it should be playing an analog signal.
The first time it happened to me, it took a long time to figure out what happened.