If I do a system restore, will it revert the resolution changes as well? Don't want to try if it won't work. I shall restart my computer again, and tap F8 as soon as I can, but can you explain to me what I did wrong, and the difference between the safe mode when pressing F8, and the safe mode I choose? I was under the impression that safe mode changes doesn't carry over to normal (display wise) and the obvious one, that safe mode isn't the same as normal mode. Maybe I did something wrong? Am I not understanding you correctly? It says 'Safe Mode' on each corner of my desktop. I thought it might carry over to normal mode, but it didn't. I choose Safe mode with networking (that's how I'm am to respond right now), attempted to change my resolution, but nothing was changed. (The reason why this screen popped up was because I had to forcefully shut down the computer by pressing the power button) Most commonly it’s a configuration, connection, or power problem or just a temporary message while booting. No signal is a message from the monitor, not the computer, that it is not getting information from the computer. Well, I'm in safe mode right now, but not by pressing F8 (my brother was asking me a question and I got distracted), but the computer gave me an option to start with either: Your desktop computer is connected to a monitor via a cable. Resolution was set to 1920x1080 (It's been like that for nearly a year and I never got this problem) I don't know how to go about fixing this problem. As soon as the Window loading screen finished, my monitor displayed 'Input not supported' again but I heard the sound when it loads the User Select screen. I thought the video card crashed or something, so I restarted my computer hoping to fix it. Upon uninstalling the game, my desktop itself displayed 'Input not supported'. So I decided to reinstall the game since there was no other way to fix it.

Once I clicked ok, my monitor displayed 'Input not supported'. After installing the game, I changed the resolution of the game to 1600圆40 since it was set back to default (not 100% on the resolution numbers, but it was 1600圆40 and above). I had to reinstall the game due to some weird update that kept crashing the game. This morning I was playing a game called League of Legend.

Aoc monitor troubleshooting no signal