There are a few steps you can take to try and determine the cause of a laptop display malfunction.
1. Check Cables and Connections:
The first thing you should do when trying to determine the cause of a laptop display malfunction is to check the laptop’s cables and connections. Make sure the laptop’s power cable is connected securely and that all other external cables (such as HDMI or VGA cables) are properly connected. If you have an external monitor, make sure that it is connected properly as well. Once you’ve verified that all cables are securely connected, restart your laptop. If the problem persists, move on to the next step.
2. Check Your Graphics Card:
If the problem continues, the next step is to check your laptop’s graphics card. Most modern laptops will have dedicated graphics cards that allow them to output video to an external display. To check if your laptop graphics card is working properly, open your system’s Device Manager in Windows, or System Profiler on Mac OS X. Locate your graphics card in the list of devices, right-click on it, and select “Properties”. Under the “Device Status” section, you should see a message that reads “This device is working properly”. If you don’t see this message, or if there is an error listed, then your graphics card may not be working properly. If this is the case, you should replace the graphics card or contact your computer’s manufacturer for assistance.
3. Check Your Display Driver:
If the problem still persists after checking the graphics card, the next step is to check your laptop’s display driver. The display driver is responsible for displaying data on your laptop’s screen. Open your system’s Device Manager in Windows, or System Profiler on Mac OS X. Find your laptop’s display driver in the list of devices, right-click on it, and select “Properties”. Check to see if there are any errors listed. If there are, you may need to update or reinstall your display driver in order to fix the problem.
4. Check Your Screen:
If the problem still persists, the next step is to check your laptop’s screen itself. If your laptop’s screen has a backlight, make sure it is turned on. Try connecting your laptop to an external monitor. If the external monitor displays properly, then the issue is likely with your laptop’s screen. If the external monitor does not display properly, then the issue is likely with your laptop’s graphics card or display driver.
5. Check Warranty Coverage:
Finally, if the problem persists, you may want to check the warranty coverage on your laptop. Depending on the laptop’s age and model, you may be able to get free or discounted repairs from the manufacturer. If this is the case, contact the manufacturer for assistance.
If none of the above steps have been successful in resolving the issue, then you may need to take your laptop in to a technician for further diagnosis. A technician can run more in-depth tests to pinpoint the exact cause of the issue.