Advice Please - Win10 PC Corrupted So that I Can't Get Past Login

[PeterOz]

bcdedit [COLOR=rgb(65, 168, 95)]press enter
[COLOR=rgb(255, 255, 255)]What do you get[/COLOR][/COLOR]

[PeterOz]

Also at the prompt
diskpart [COLOR=rgb(65, 168, 95)]press enter
List vol [COLOR=rgb(65, 168, 95)]press enter
[COLOR=rgb(255, 255, 255)]What do you get
To get out of diskpart
exit [COLOR=rgb(65, 168, 95)]press enter[/COLOR][/COLOR][/COLOR][/COLOR]

[EugenioB]

bcdedit

[EugenioB]

diskpart

[PeterOz]

at the C:> dir [COLOR=rgb(65, 168, 95)]press enter[/COLOR]

[PeterOz]

Do you have a spare thumb drive about 16gb?

[PeterOz]

scroll down to method 4
https://www.diskpart.com/windows-10/windows-10-bcd-repair-5740.html#:~:text=It%20is%20stored%20in%20a,on%20t he%20EFI%20System%20Partition.

[Bastet]

If you can reach the cmd prompt then try these cmds:

SFC /SCANNOW
DISM /Online /Cleanup-Image /StartComponentCleanup
DISM /Online /Cleanup-Image /RestoreHealth
SFC /SCANNOW

Yes the Sfc cmd is run twice.

Ensure you’re holding the on/off button to force restart as soon as the manufacturer’s logo shows.
You can als reach the recovery environment by holding shift while pressing restart on the log in screen, continue holding shift until the recovery environment shows.

I can’t see the file so can you post the results?

[Bastet]

Safe mode is still available but you’d need to be able to reach the troubleshoot menu or reach the log in screen to access it.
If you can still reach the log in screen - hold shift which clicking restart, continue holding shift until you reach the troubleshoot menu.

[EugenioB]

Screen photo of root folder on boot drive is attached.

[EugenioB]

Safe mode is still available but you’d need to be able to reach the troubleshoot menu or reach the log in screen to access it.
If you can still reach the log in screen - hold shift which clicking restart, continue holding shift until you reach the troubleshoot menu.

[EugenioB]

Bastet, I can’t seem to be able to attach a text file in response to you.

[EugenioB]

PeterOz,
For your suggested Method 4, downloaded an installed the AOMEI Partition Assistant. To Make Bootable Media requires the Pro edition, license costing $50 for 1 year or $60 for lifetime. Tried to use the free function Win To Go, to create bootable USB media (not sure how useful this might be, since there was no promised inclusion of AOMEI Partition Assistant), using previously loaded Windows10.iso file from Microsoft support site, but it hung at 5% for over 15mins, and can’t seem to be able to cancel it without invoking Task Manager. I’ll try again later with their own image available for downloading, but I suspect this is barking up the wrong tree.

[EugenioB]

Bastet,
I can’t get the PC to do anything other than go to the login screen, when booting off the original boot drive C:. None of the “tricks” with Shift key, power switch, or anything else seem to alter the boot sequence, in any way. The only control that I seem to get over this “runaway beast” is through booting off separate media (a bootable USB stick, made from the Microsoft Support web page). This gives me a Troubleshoot menu. The only Troubleshoot function which seems to do anything useful is the Command prompt. Everything else returns one form or another of failure message. The only other Troubleshoot option which I have not tried would be to restore a previously-saved image of the boot drive, but I do not have such an image.
Thank you for trying.

[EugenioB]

PeterOz,
It turns out that I should have been more patient with the Win To Go, as their own AOMEI website led me back to the Microsoft web site download of the Windows10.iso file, which I already had. I have now waited a much longer time, and the burning process has progressed to 30%. I cant understand what could make burning an ISO image an from an SSD to USB so slow, but I’ll be patient. I still don’t hold much hope that the outcome of this operation will be useful for this particular purpose, but I’ll keep an open mind.
Thank you for trying to help.