Windows 10: Failed upgrade to 21H1

Everything had been working fine until Windows decided to upgrade to 21H1. The update took a long time to complete. Now when I turn on the computer I get to the highlighted sign on the screens, I can log in, but then all I get is a black screen where I can see the mouse pointer. Contorl / Alt / Delete opens the task manager menu, but all those functions are logging out or shutting down. Running task manager leads to black screen and mouse pointer. Can this be saved without losing my files?

:)

 

Ssd upgrade

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

 

Windows 10 PRO 20H2 to 21H1 upgrade fails on reboot

The MS troubleshooters found no problems with upgrade process. I only tried the Media Creation tool once and upgrade assistant twice. I will give it another try tomorrow. And will run setupdiag also tomorrow. Security is only Windows 10 security that comes with Windows 10. Fully active and log file generated by failed upgrade attempts does not show any problem due to firewall.

This is a homebuilt PC with ASUS MB/AMD 6core CPU/8GB RAM/AMD Radeon 6570 video card. OS Win10 Pro 32 bit. OS and hardware drivers are as up to date as MS and vendors have available.

Boot drive is 256GB SSD with two partitions one 252MB system reserve partition and the other the main 223GB boot partition that contains programs and OS.

Data/System backups are on larger 1.5TB internal SATA drive.

I would prefer not to do clean reinstall of the OS but if I did would probably choose the 64 bit version since my computer is capable and my license is either 32 or 64 bit.

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OK
Ran Setupdiag. Results highlighted Operation failed: Enable Page File in SafeOS. Error: 0x8007023E[gle=0x000000b7]
occurring right at the end of the installation (last reboot).
Researched that on the internet and lots of possibilities. Most suggested fixes were pretty complicated and did not seem to work for others. Video card driver seemed most likely but I had the latest AMD driver even though it was 2015 was MS certified.
One optional update was for an "alcor USB driver" which I had never installed since everything seemed to be working fine. I updated that driver.
Then I ran across an easy to implement series of steps (that I felt would not corrupt my current install.
These steps were:

1. Go to the Windows search bar and type services.
2. Double-click on the Services app and scroll down to Windows Update.
   
   
3. If the service is already running, right-click on it and select Stop. Then restart it.
4. If the service is disabled, right-click on it and select Start.
5. Additionally, make sure the Background Intelligent Transfer Service and Cryptographic Service are running.

I made sure these 3 services were running and then restarted each of them.
Rebooted the computer and ran the Windows 10 update assistant again. This time the update completed successfully and I am now running 21H1. I do not know if it was the USB driver upgrade or the services resets that corrected the problem but each were painless to implement.

And in response to earlier posts yes I do know that the MB as a BIOS battery but that is not what battery monitor checks. Battery monitor is not even on my OS. And I also know that my 32 bit installation can only use 4GB of the RAM on the MB. I have more RAM because I was given some and I will probably upgrade to 64 bit OS in the future.
Thanks to all who made suggestions.

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Upgrade worked but all Chrome bookmarks (about 900) and passwords disappeared. I don't sync with google but probably should. I did have weekly Macrium disk images so I was able to retrieve them. Couldn't find them on Win10 restore points.

 

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?