Aoc Monitor Buttons : · to make further adjustments, press and .. Aoc i2481fxh menu system (osd). Press the power button to turn on the monitor. How to adjust brightness of aoc u2477pwq monitor. Instructions for the aoc monitor · push the "power" button on the lower right side of the front panel to turn on the aoc. Please check with the local dealer or aoc branch. Instructions for the aoc monitor · push the "power" button on the lower right side of the front panel to turn on the aoc. Hotkeys 1 source/auto/exit/up 2 eco/dcr/down 3 clear vision/ left 4 image ratio/volume/ right 5 power/ menu/enter menu/enter press to display the osd or confirm . Maybe it is stuck due to dirt . By changing these settings, the picture can be adjusted to your personal preferences. .button stuck in off position try using alcohol to clean around and on top of the button to try and free it. Aoc i2481fxh menu system (osd). Press the power button to turn on the monitor.