Laptop Not Detecting Monitor – What to Do If Your Extended Display Is Not Working

The best thing about a second monitor is that you can have another workspace in a pinch, allowing you to keep things separate from your computer screen and get back to work.

It adds more space to your workspace, enabling you to accomplish more with ease.

You can easily connect your laptop to a second monitor.

If the laptop detects a monitor, but the computer is not able to see it, it could be a number of things. You might have a bad cable, outdated drivers, or the monitor is turned off.

There are several things you can do if your extended display is not working.

Here are five ways to fix the “laptop not detecting the monitor” problem.

Once you are sure your cable is in good condition and is not loose, then test it by disconnecting and reconnecting it after a while. If this does not solve the problem, then try using a different cable.

Connect any accessories that don’t interfere with your new system.

Your monitor is unlikely to be the problem. If you’re sure that the problem is the monitor, then make sure you have a different system in order to test your connections.

There’s nothing wrong with the monitor if it connects.

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Laptop Not Detecting Monitor – Working Fixes

Check to see if the second monitor is enabled

You can right-click the start button and select Control Panel
Next, click on Hardware and Sound
Then, click on Display
Click Adjust screen resolution and choose Project to a second screen
After that, click on Extend
Next, click on Multiple displays
Click on it and make sure that the

On the drop-down list, select Extend these displays. Then, click Apply and Ok.


You can run the Hardware and Device Troubleshooter to resolve the problem.

Any device connected to your computer must be checked for compatibility before it is installed. This check ensures that all the devices are correctly installed on your computer.

On Control Panel, click View by, and then Small icons
Next, click Troubleshooting
The troubleshooter will detect the issue causing your laptop to not detect a second monitor, if there is such.

Force PC to detect the monitor

Go to Settings > System
Click on Display > then go to the Rearrange your display section and click on Detect

Update drivers

You can do this by checking Windows Update, installing the latest drivers from the manufacturer’s website, or Device Manager.

To use Device Manager to install updates, go to Device Manager and click on Display Adapters.
Right-click on the graphic card displayed and select Update driver. You can either search automatically for the updated driver software or manually.

If your laptop runs on Windows 7, choose the former option. Windows will automatically download and install the latest driver for your computer.

You should check whether your monitor is now recognized.

Rollback the graphics driver

If you recently updated your video card driver and your laptop can’t detect your new display, you might have to go back to the previous driver.

To do this:
Go to Device Manager
Click on Display Adapters to expand it
Right-click on the driver shown, and then click Properties in the drop-down list
Once it opens, click on the Driver tab, and then click on Roll Back driver.

Restart your PC. If the “Restart now” option is unavailable for your driver, you’ll need to contact your computer manufacturer.

When you go to the manufacturer’s website, you will need their name and the names of your adapters.

To find Device manager, use the task bar search function to find Device Manager.

Click Device Manager, and then click Display adapters to expand it.

When you look at the expanded list you’ll find your graphic card with the needed information.