Failed to upgrade Windows 10 to Windows 11 23H2 on my PC

Hello, 👋

It would be helpful if you give me more details.

For Example - What error, was your tpm enabled, was secure boot, amount of RAM on and more.

If you are facing problem then try manual installing windows - 

First be on setup screen.

Press SHIFT + FN + F10 (or try SHIFT + F10)

After cmd pops open try to do the things as per the video instructs - just be sure to type clean before doing the commands specified.

At last just wait for 100% completed sign.

Then create boot files like this - 

bcdboot C:\Windows /s b: /f UEFI

Then type - 

wpeutil reboot

to reboot the pc and the windows will install. Ultimately it will land in OOBE(Out-of-the-box experience) where you have to fill details and your computer is set.