Restart your machine again and check again.If the issue persists, go through the same steps and select Uninstall device.Restart your computer and check if you can extend your desktop.Then right-click on your GPU and select Update driver.Launch the Device Manager and expand your Display adapters.Install the latest GPU driver version or reinstall your driver and check if this method solved your extended desktop problem. If your GPU driver is outdated or corrupted, you’ll encounter all sorts of display-related issues. Go to your GPU manufacturer’s website and check your GPU’s specs and capabilities. Speaking of your GPU, it’s worth mentioning that some GPU models don’t support more than one external monitor. Apply the changes and check if the extended desktop mode is working now.Enable the High-performance option to use your most capable GPU in extended desktop mode. Select the GPU settings you want to use for that program.Select the program(s) you’re running in extended desktop mode.Scroll down to Multiple displays and select Graphics settings.Here’s how you can set up your computer to use a specific GPU while the extended desktop mode is on. Additionally, you can also change the default GPU for your device. You can try switching to your computer’s default GPU or set a specific GPU for the programs you’re running in extended desktop mode. This method applies only to systems equipped with more than one graphics card. If the issue persists, continue with the troubleshooting solutions below. Use a docking station or USB adapter instead and check if you can extend your desktop now. The splitter does not create separate independent signals it only duplicates the same signal to your external monitors. ⇒ Important Note: If you use a display splitter to extend your desktop to two monitors (or more), it won’t work. Plug your monitor into a separate video output port. Test with a different cable if you’ve got one at hand. Ensure the cable connecting your computer to your monitor is properly connected. Restart your computer and check if the issue is gone. Unplug or disconnect your external keyboard, mouse, storage device, USB flash drive, dongle, etc. This includes any external devices and accessories that may conflict with your monitors. The OS will then restart your GPU driver.
This shortcut alerts the system something’s wrong with the GPU.
Go to Settings → Update & Security → Windows Update → Check for updates. Installing the latest OS version can fix a wide range of issues, including extended display glitches. Fix Extended Desktop Issues on Windows 10 Quick Fixes Sometimes, the option is not available, or one of the displays is constantly disconnecting.
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