Have you tried another port? also another cable, i doubt it come from the GPU VRAM, GPU VRAM dying hapenned to me once and i looked like this.

I think your problem is a faulty output port or cable, you seem to have tried another device and the monitor worked wich means the problem come from the cable or PC itself, it doesn't look like GPU VRAM, so i suggest you try another port, cable and if you can another monitor.

in hope to help.

 

I know this might not help, but the same thing happens to me on only one of the monitors(the right one, both are the same), and it seems it went away after driver reinstall but at the time turning it off and on would solve it. It sounds like generic answers i know..

 

Thank you all for your answers , gpu was replaced , everything works fine now

 

You can literally see this type of error in one of NorthwestRepairs videos.
https://www.youtube.com/@northwestrepair/videos
VGA error. He takes the GPU apart and fixes it. IIRC it was some kind of DRAM chip / VGA memory chip. IIRC, he is running EXTENSIVE ERROR SEARCH with electric measurement instruments. Thinks, maybe its one of the DRAM chips, finds some voltage error, takes out the malfunctioning chip and replaces the chip with a new one = re-solders it onto the disassembled GPUs printed circuit board, tests it, reports OK. Tests are running fine, image is clear in games and benchmarks. Reassembles the graphics card.
So if its a cheap GPU it may not be worth the repair. Buy another one?