Chosen Solution

Can anyone diagnose this problem? I’ve been trying many methods it doesn’t seem to get better, My biggest issue now is how can I call this monitor issue to find the right to fixing it. Is it a hardware or software failure? Model: Acer g206hql

Hello, Can you post any internal screen and windows settings? How is it connected? Can you switch cables? Can you try another device working with the same issues on this monitor?