I changed my display properties, now i cant view display on ,my 17" monitor

I changed screen resolution properties of my PC from display setting now i cann't my monitor can't display anythings
Update: OS start normally till booting when windows start nothing display, blank only, same with SAFE MODE
Update 2: "MZ ?"

sign shown on monitor screen
Update 3: i changed to screen resolution to 1280 by 1024 or 1920 by 1440
but not confirm
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