Grab another monitor or your personal TV.Disconnect the HDMI cable from your current monitor.Although this step may not do too much of a difference in this case, but it's always a good idea to try extra things in our agenda. If you're confident that your cable and your display works, then it's a good idea to try a different monitor.
Without screwing them, the cable may accidentally get disconnected from time to time. If your cable is a HDMI to VGA, then make sure that you screw in the cable to the monitor.
Change the monitor input channels to HDMI/DVA/VGA etc. If you don't have another computer, then try to connect the cable to your local library or to your friend's computer. Disconnect the HDMI cable and connect it to another computer or display. So how do we check whether the cable is functioning properly? 
Overtime, the cable may bend, accumulate dust in the heads, so the pins and of course, build up rust. So, the display works, but you are unsure whether the cable works.
If still unsure, move to Fix 2, otherwise move to Fix 4. If the display works, then the display and the cable are functioning properly.
Remember to switch the monitor to the correct input channel. Disconnect the HDMI cable from your computer. If you have tried all the above and the monitor works, but still no picture, then try to connect your monitor to another computer. Is the cable connected properly to the monitor? Give it a small push to confirm. Are you connecting the monitor to your computer via a HDMI cable, or DVI, or VGA? Make sure to check all the inputs to see whether you get any picture in your screen. Usually you will see a light on the button, or somewhere on your monitor indicating that the monitor is on. Here is what you can do to confirm that your monitor is working properly: Although rare, it could be the case that your monitor has burnt out, but that certainly won't be the case if you can turn on your monitor. That's right, the first step is to check what's up with your monitor. Don't worry though, below, I am listing all potential reasons why you get a black screen, starting by investigating you display, then going to your computer. You may have put the HDMI to a wrong HDMI input, a hardware issue etc. The problem could be actually within your computer. 
The most obvious would be your display is faulty, but don't begin counting your savings yet. There are loads of reason why this might occur. So, how do I fix my black screen display while my computer is on?
A second display or second computer for testing purposes (recommended but not required).Īs part of this article, we have created a video showing all the fixes which we explain below. Fix 8: Reset BIOS Settings (Reset CMOS). Fix 5: Remove RAM components and re-install them back to the motherboard. Fix 4: Connect monitor to the correct HDMI input. So, how do I fix my black screen display while my computer is on?.
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