The monitor power cord goes from the power outlet to the monitor. To get started, turn the monitor around to reveal its backside, taking note of the the cables running to it. The first thing to do is to ensure that the monitor power cord and the monitor display cable are securely connected.

Reset Power Management Options and Disable the Screen Saver.

Ensure the Monitor Cables are Not Damaged.

Review your DVI and HDMI Cable Configuration.

Here is a summary of some tests you can try to figure out what might be The best way to resolve this problem is through process of elimination as such, I will go through the list of things you can do to help determine why the monitor keeps going black or turning off sporadically. There are many reasons why a monitor keeps turning off, resulting in a blank display. Any ideas why my monitor keeps turning off? ' Normally the power light is green when it is powered on and working properly. Sometimes I have to power it on and off 20 times before the monitor will work properly, and some days, my monitor won't turn on at all! When this happens, my monitor power light stays yellow as if the monitor is sleeping or in standby mode. It flashes on and then off after a few seconds, then it goes to aīlack / blank screen.

Windows updates keep turning off