AOC monitor problem

Hello everyone, so i have AOC 24g2 monitor, had it for 3 years now and all of the suddon i have a problem where the monitor keeps switching the input by itself. I use it with DisplayPort and i do NOT have HDMI 1 or 2 connected to the monitor so its the only cable plugged in besides the power ofc. Also i can not access the main menu of the monitor, because whenever i try to use it it acts as i am switching between the ports... (i have tried updating my drivers, restarting the pc, unplugging the monitor for 30min and nothing worked. if anyone has any solution it would be much appreciative.