The monitor (as well as the one to the computer) and physically examine them.Д¬ables can be pinched if the computer desk is lying on top of them (usually because the desk has been moved or shifted). In this case, you will need to unplug both the power and the display cable to The signal to become short circuited, and the screen to go blank. If a monitor power cord or display cable are pinched or twisted (especially at the very ends), this can cause Ensure the Monitor Cables are Not Damaged If not, purchase one that has a high AWG (thickness) as this will help to ensure a strong signal.Дў4 AWG CL2 rated HDMI cables by Monoprice - I own many of them and they areД®xcellent - and also available through Amazon!ДЄssuming that the cables are plugged in securely, power on the monitor and check to see if In this case, you can bypass the splitter or receiver and see if that makes any difference.ДЄt any rate, I suggest you try another HDMI cable (if you have one lying around) to see if that resolves your problem.

For example, you may have purchased a stereo receiver and ran the cable through the receiver instead of directly through the monitor. Sometimes, HDMIД¬ables won't work properly if there has been a recent hardware configuration change. If the cable run is too long, or of the signal has been split (using a non-powered DVI or HDMI splitter), this can cause the monitor to go black because the signal isn't strong enough.Д«ased on my experience, some HDMI cables will simply stop syncing properly after a while, even though they worked fine previously,ДЄnd even though the same cable works fine on another device. Simply put: both DVI and HDMI are digital signals if the signal is too weak, the monitor won't sync to the computer, resulting in a blank screen. In the case of HDMI and DVI, there are some extra considerations to keep in mind. Review Your DVI and HDMI Cable Configuration If one of the wires is at fault, then the display will turn on and Wires on the power and video cables to see if it causes the monitor to turn on Now, power the monitor on to see if it comes on. Otherwise, I wouldn't be able to plug the cable in. I use these on my 55' LED TVs that useД®xtremely thick HDMI cables. Space and/or if the cable is too thick to be bent properly (in order to make theД¬onnection), you might want to consider using an Note that HDMI cables cannot be screwed in. Now, ensure that the cable is screwed into both ends. Follow the cable all the way to the computer and note where it is plugged in. To do so: go to the back of the monitor and locate the other big (usually black) cable - it will be either a It runs from the back of the computer to the monitor, so you will need to check connections at both ends this time. The monitor display cable is the cable that delivers the picture from the computer to the LCD display. The power cord is pushed in all the way and the connection is secure.

If it is not secure, the monitor simply won't turn on (indicating no power led in the front of the monitor), or it may cause the monitor to short out. 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 aД«lack / blank screen.

Mac desktop screen shuts off randomly