Monitor turns black when switching resolution.
Hello guys . I have had a problem with my monitor for a while now and i decided to ask here. My monitor is 1440x900 and i had it for 2 years. It's a Hanns-G HW191A. Problem is when i change resolution to something like 1280x960 or lower after changing it will turn black and i have to turn it off from the button on the side many times until it can run without turning black. I mean it stays on for 1-3 sec and then black,then i have to redo it until it works(or change back to 1440x900 and also try many times). Does anyone have a clue of what i should do or there's no way? Thank you