Windows 10: External HDMI monitor not detected after latest WIndows 11 updates

Hi, After installing Windows updates on my Windows 11 powered ASUS ROG laptop, I cannot connect to any external HDMI monitors, nor are they detected from the 'Displays' menu in Windows. I can attest that there is no chance that this is a hardware issue, as the laptop is dual-boot with Ubuntu with which I can connect to an external monitor without any issues. Looking forward to your feedback!

:)

 

After update today, external HDMI monitor has no sound and speaker no longer listed as audio device

My Windows 11 22H2 updated today with

2022-09 Cumulative Update for Windows 11 Version 22H2 for x64-based Systems (KB5017389) and 2022-09 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for x64 (KB5017271).

Now my external HDMI sound is gone.

From task tar, click sound icon, only see Lenovo laptop's built-in speaker listed (Realtek Audio).

Before I can see my HDMI monitor's speaker listed there.

Shutdown laptop and leave external monitor on does not help. Disconnect HDMI cable, power off/on monitor did not help either.

Audio of Device Manager does not list external HDMI monitor's speaker listed there neither.

I especially suspect KB5017271 caused the problem. Was updated KB5017389 first and it seemed was fine with external HDMI monitor speaker (but not 100% sure) which was updated first.

 

Video port dead and external Monitor not detected after Windows April update build 17134.48...

Video port dead and external Monitor not detected after Windows April update

Windows 10 Version 1803

Dell Venue 11 Tablet 64bit

I run mostly Microsoft apps, Office 365. Quicken 2017

There were no changes made to the system, no new apps.

everything ran perfect until the update

after the update the HDMI Video port no longer works.

There is nothing wrong with the cable or the Samsung 65in TV

are no longer recognized by windows, It was still listed in the device manager I tried deleting it but it no longer returns after refresh.

It is still listed under stetting's Bluetooth and other devices.

Updated all Dell drivers, did not help.

Tried to system restore, failed and can't undo that attempt it is stuck.

There is nothing wrong with and of the attached equipment or the computer except that the update Fail's to address the port and detect device.

Poor coding a character must be in error pointing to the mini HDMI port.

NICE WORK MICROSOFT, Someone needs to proof read your code for errors.

Any suggestions ?

Video port dead and external Monitor not detected after Windows April update build 17134.48...

 

Video port dead and external Monitor not detected after Windows April update build 17134.48...

Video port dead and external Monitor not detected after Windows April update

Windows 10 Version 1803

Dell Venue 11 Tablet 64bit

I run mostly Microsoft apps, Office 365. Quicken 2017

There were no changes made to the system, no new apps.

everything ran perfect until the update

after the update the HDMI Video port no longer works.

There is nothing wrong with the cable or the Samsung 65in TV

are no longer recognized by windows, It was still listed in the device manager I tried deleting it but it no longer returns after refresh.

It is still listed under stetting's Bluetooth and other devices.

Updated all Dell drivers, did not help.

Tried to system restore, failed and can't undo that attempt it is stuck.

There is nothing wrong with and of the attached equipment or the computer except that the update Fail's to address the port and detect device.

Poor coding a character must be in error pointing to the mini HDMI port.

NICE WORK MICROSOFT, Someone needs to proof read your code for errors.

Any suggestions ?

Video port dead and external Monitor not detected after Windows April update build 17134.48...