Windows 10: Windows 11 Install Failing, Not Giving an Error Code

I've tried to upgrade to Windows 11 a bunch of times now, but after my PC reboots when the Installation Assistant finishes, the progress of updating will go up to ~87%, then show the message that Windows is undoing the changes it just made. After that, I'm put back on my desktop with no error code or pop up box telling me why the installer failed.MB: Z390-A PRO MS-7B98BIOS: UEFI 1.E1 17/11/21CPU: Intel i7-9700KWindows 10 Drive: Patriot Burst 480GBRAM: 16 GB

:)

 

BIOS error codes

So I have motherboard with installed small LED screen, which presents BIOS error codes.

Where can I find a list of those errors. And I don't mean beep codes, but the "number" codes.

Ex after installing sound card, the motherboard startup fails with the code 15.

Example picture of code is here.

 

KB4025339 Fails Install 0x80070564

Thanks
I am trying Eagle 51's suggestions now. Windows Update troubleshooter found a bunch of errors and fixed all but one.The update is trying to download KB4025339 again. I'll see what happens. At step one troubleshooter finishes with one error unresolved "Potential Windows Update Database Error Detected-Not Fixed". Windows update stalled at 0%.

At step 2 same troubleshooter error. The KB finished a new download failed to install.
Did step 3 KB has downloaded but fails to install.

If Eagle's suggestion doesn't work I'll try EdTittel's suggestion

Tried bothe Eagle & Ed 's suggestions - do not work. Anyone else?

I have noticed that the latest update for my nvidia drivers has failed to update. Wondering about that!

 

Windows Updates failed to instal

I just did step one and they have just all installed.... thank you so much.... it was quite frustrating having that update window pop up every 5 minutes and failing to instal every time

Thanks mate