Windows 10: Why is 24H2 upgrade failing?

A few weeks ago Windows Upgrade offered me 24H2 I'm running 23H2, which I accepted. It installed up to a little over 60%, hung for a very long time, then gave up, undid itself, and recovered the old installation. There were no error messages, so I have no idea what was wrong.Today I got an on-screen message that Windows had downloaded an update and needed to re-start to complete installation. So very foolishly thinking that if it had chosen to download itself it was going to work I let it re-start, only to get a repeat of the previous scenario. It got to 60%, hung for a long time, then wen

:)

 

Ssd upgrade

What do you mean "no good"? At which step did it fail?

 

Factory reset Windows 11 24H2 (build 26100.863)

Hi, I am Dave, I will help you with this.

There are no currently listed problems resetting version 24H2 of Windows 11 and no specific steps you need to perform, are you experiencing any problems with that insider build that is causing you to perform a Windows reset?

 

Stuck in Windows 10 Upgrade

My computer seems to be stuck in a Windows 10 failed upgrade loop. I was running fine on a beta version of Windows 10, and then I came downstairs one morning to see it repeatedly booting, attempting to repair, then rebooting. The steps I've taken to diagnose are:

• Attempting to boot off a USB drive (with all drives disabled in BIOS) - this fails at the point of the blue windows screen
  
• Attempting to boot the machine itself and getting into "repair/safe mode" using F7
  
• Looking at the BIOS for obvious failures (e.g. RAM that should be there is missing) - nothing obvious is wrong.
  

I am fairly certain the build version was 9926. For many months, the system would attempt to upgrade, and then say "it failed" for some reason and roll back.

Suggestions for next steps?