Windows 10: External monitor doesn't work on HDMI after 24H2 update

I have an old monitor max. 1280x1024 @75Hz with VGA and DVI ports on it and used it with an HDMI - DVI cable for a while. Now, after the 24H2 update the monitor says, "input signal out of range" when it is connected to the HDMI port on my laptop. In display settings I can change anything it still won't work. The desktop signal changes but the active signal will not and remains in a resolution the monitor can't work on. 1920x1080 Literally, Windows 11 can't identify the monitor as before, it just says "external monitort" instead of the exact type of it. What could have happened?

:)

 

External Monitor Not Working Via HDMI Cable

Summary:

After updating from 1703 to 1809 we are experiencing an issue where the external monitor has stopped working.

The end user has an HP Elitebook x360 1030 G2 device connected to an external monitor via HDMI cable.

The external monitor was working fine before the update.

Troubleshooting steps we have tried:

Check the cables are plugged in properly - all good

Update Intel Graphics 620 driver - doesn't work

Update the device BIOS to latest version - doesn't work

Workaround:

User is able to use external monitor by doing the following:

- power on machine

- at bitlocker, press esc twice which goes to bit locker recovery

-power off the machine

-power on

-external monitor works

However, has anyone come across this issue previously with a permanent fix?

 

Windows doesn`t start. Authomatic repair doesn`t work.

Thanks again!!

I`m sorry I had not noticed that the text on the picture was in spanish. It says that windows has replaced some damaged clusters in "name" file and "directory". Then, at the end "an unspecified error occurred (75736e6a726e6c2e 4f6)".

I`ll do it and I`ll be updating this thread when I have the report.

- - - Updated - - -

I ran SeaTools. These are the results:




Does it mean my HDD is useless?

 

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.