Display is not working
There are times when you turn on the system and you find out that the display is not working, not only screen but also the mind goes blank! Not anymore, This post has tips you can follow to figure out the problem and think of solution.
If the problem is not blank screen but a blue screen with errors, refer to the post about blue screen of death and how to troubleshoot it.
Monitor is off
Well, make sure the monitor is turned on. Check the LED. If no light comes on after several attempts, proceed to the next section.
Computer in sleep mode
If you went away from the computer for sometime and returned to a black screen, it is likely that the computer is asleep. Move the mouse, press buttons or any key. If none of those actions work, press the power button.
Check the data cable
Make sure that your monitor’s data transfer cable is properly connected to the computer. It should be firmly in place. Most new displays uses a DVI or HDMI cable and port.
Check the power cable
Ensure the monitor is getting power by verifying that is a light (blue, green, or orange) on the front or bottom of the monitor’s panel.
When you see no lights on the monitor, make sure it is connected to a working wall outlet. If the power cord is removable from the back of the monitor, replace it with another power cable. If you still cannot turn on the monitor after trying another wall outlet and cable, the monitor is broken and should be replaced.
Check LED status
If the monitor status light (mostly located on the bottom of the monitor’s bezel) is orange or flashing, the monitor might be in a suspend mode, to come out of it move the mouse or press a key on the keyboard. If this does not help, reconnect the data cable to the computer and back of the monitor, and then restart your computer.
Try with different cable
If your monitor is getting power, but you don’t see an image, the data cable may be the issue. Try another DVI, HDMI, or VGA cable with your monitor.
Turn up the brightness and contrast
When you’re able to view your monitor’s settings menu even though the screen is blank, maybe you need to increase the brightness and contrast.
If the computer doesn’t pass Power On Self Test, it won’t turn on and your monitor will remain black. If you hear beep sounds when you turn on your computer, run through the POST troubleshooting steps to find out the problem.
If you have followed the tips above and still have the same issue, your computer may have either a improper monitor, video card, or motherboard. The best method of determining this is to try the suggestions below.
Get someone else’s computer a computer monitor and connect it to your computer
If another monitor works on your computer, it means your monitor is bad and that might be the reason display is not working. While it may be possible to have the monitor serviced, it is often cheaper and easier to purchase a new one.
Connect your monitor to the other computer
If your monitor works on the other computer, the chances are that your video card is bad. Remove video card from the affected computer and install it in another computer. If it does not work in the other computer, the video card is probably not working and needs to be replaced.
If your monitor and video card works with another computer, your motherboard probably has an issue. You can attempt to troubleshoot motherboard problems. If you find out the motherboard is bad, or you are unable to successfully run diagnostic tests, motherboard replacement might be needed.