Windows 11 Not Detecting TV via HDMI After Upgrade

[Imeling]

My computer used to connect to my TV through HDMI without any issues on previous Windows versions, including Windows 10. After upgrading to Windows 11, the TV is no longer detected as a display.
I have already checked the HDMI cable, ports, drivers, and display settings, but nothing has fixed the problem. Does anyone know how to solve this?

 

[ChatGPT]

Hi Imeling,
Since this started after the Windows 11 upgrade, the most likely causes are graphics driver state, Windows display detection, or an HDMI handshake problem between the PC and the TV. Microsoft’s current guidance for external-display issues specifically recommends checking updates, verifying the active projection mode, resetting the graphics driver, and rolling back or reinstalling the display driver if the problem began after an update. (support.microsoft.com)

Try this in order​

1. Do a full power reset of the TV and reconnect​

1. Shut down the PC completely.
2. Turn off the TV and unplug it from power for 60 seconds.
3. Disconnect the HDMI cable from both ends.
4. Plug the TV back in and turn it on.
5. Manually set the TV to the correct HDMI input/source.
6. Reconnect HDMI and start the PC.

Microsoft notes that external displays can fail to appear if the display is not set to the correct input, and also recommends power-resetting the external display. (support.microsoft.com)

2. Force Windows to re-detect the display​

1. Press Windows + P.
2. Select Duplicate or Extend.
3. Then press Windows + Ctrl + Shift + B.

That key combination resets the graphics driver in Windows and is one of Microsoft’s recommended steps when an existing monitor setup suddenly stops working. (support.microsoft.com)

3. Remove anything between the PC and TV​

1. If you are using a dock, hub, adapter, converter, or extender, disconnect it.
2. Test with a direct HDMI-to-HDMI connection only.
3. If your PC has more than one video output, test another port.

Microsoft specifically warns that docks, dongles, and adapters can cause conflicts, and suggests trying another available video output when possible. (support.microsoft.com)

4. Update Windows and install optional driver updates​

1. Open Settings > Windows Update.
2. Install all pending updates.
3. Open Advanced options > Optional updates.
4. Install any graphics, chipset, or firmware updates offered.
5. Restart and test again.

Microsoft’s external monitor guidance says to make sure the device is fully up to date before deeper troubleshooting. (support.microsoft.com)

5. Roll back or reinstall the display driver​

Create a restore point first before changing drivers.

If the issue started right after the upgrade/update:​

1. Press Start, type Device Manager, and open it.
2. Expand Display adapters.
3. Right-click your graphics adapter > Properties > Driver tab.
4. If available, click Roll Back Driver.
5. Restart and test HDMI again.

Microsoft recommends rolling back the display driver when monitor problems begin after an update. (support.microsoft.com)

If Roll Back is unavailable:​

1. In Device Manager, right-click the graphics adapter.
2. Choose Uninstall device.
3. If shown, check Attempt to remove the driver for this device.
4. Restart the PC.
5. Install the Windows 11 graphics driver from your PC manufacturer’s support page first, or from Intel/AMD/NVIDIA if your manufacturer does not provide one.

Microsoft’s documented next step is to reinstall the display driver if rollback is not available or does not help. (support.microsoft.com)

If it still does not detect the TV​

Please reply with these details:

1. Your PC or laptop model
2. Your graphics adapter name from Device Manager
3. Whether the HDMI port is direct on the PC or through a USB-C/adapter/dock
4. Whether the TV appears under Settings > System > Display > Multiple displays
5. Whether it works if you connect the PC to a different monitor or TV

If you want, I can help you with the exact driver package for your model next.