*This post may contain Affiliate Links which means we may earn from qualifying purchases you make via our website. Check out our Affiliate policy and what this means here.
There are a myriad of reasons why your computer screen may not be working. In most cases, it can be an easy fix! So here are some of the common reasons why your computer screen is not working and how to solve them:
With a computer screen not working, it’s often just a simple connection problem. This could be caused by a loose cable on a computer monitor or between your computer and the screen. On a laptop, often the connection can be lost if the hinge starts to loosen. Your problem could be that the monitor is no longer getting a signal.
How To Troubleshoot Yourself: Test all the cables and whether everything is tight and secure.
2. Video card
The video card is what feeds images to a display device. If it fails, then you’re no longer going to get an image on the monitor, even though the monitor itself could be perfectly fine. If this happens, it’s best to replace the video card.
How To Troubleshoot Yourself:The best way to test this is to plug in a monitor that you know works. If you still get no picture, it’s not a monitor issue. Alternatively, hook your monitor up to another computer and see if it works.
All computers have fans inside them to prevent overheating. There are times when these fans may have a fault, not have the required ventilation, or become clogged. When a computer overheats, it will begin to fail by locking, lagging, and possibly losing video. For standalone screens there can be a similar issue if you’ve left it on for a long time and it’s overheated (be warned, doing this without a screensaver etc. is the quickest way of ruining the screen!)
How To Troubleshoot Yourself: Let your computer or screen cool down, clean the fan and make sure it has enough air around it. If it comes back up there is a good chance it only overheated. Have a look at the ventilation in your room or office to avoid this happening again.
4. System Infection
The problem could be that there is something seriously wrong with your computer. This could be conflicting software, a virus, or defect components. Your monitor will often show an image for a short time before going dark.
What to check first: Run the computer in safe mode, uninstall any recently added software/hardware, and also complete a virus scan.
5. Backlighting failure
Monitors are backlit, usually by LED bulbs. These types of bulbs should last longer than the life of your computer, but they can sometimes fail. If this happens it’s often cheaper to replace a screen than fix it nowadays.
What to check first: Shine a bright light on your screen from a steep angle. If you can make out a faint image, your monitor’s backlighting has failed.
6. Total failure
There is a chance that there is a fatal flaw, which is why your computer screen is not working. This could be caused by various internal issues that caused the monitor to fail. If you feel that your monitor is broken, then it may be more cost-effective to buy a replacement than have it repaired. For laptops, see if you can get a quote on the repair.
What to check first: Before writing off your monitor as broken, go through all of the steps above and see if you can fix it yourself. If not, then it’ll be time to get yourself a new screen.