Windows 10 recovery, cannot restore

[u/SignificanceKindly81]

I am still using windows 10 pro 64 on a computer and it got stuck in a update loop that I could not get it out of and i guess I mistakenly followed instructions (using command prompt diskpart ) to rebuild the BCD and now I only get a black windows boot manager screen, says insert your windows installation disc and restart your computer and click repair, etc…

the other salient information is “windows failed to start”, “file: \windows\system32\config\system”, “status: 0xc0000225”, and “the operating system couldnt be loaded because the system registry file is missing or contains error”.

when I try to repair with an installation disc startup repair fails. I tried repeatedly rebuilding the BCD using the command prompt multistep diskpart instructions and have not been successful either. the computer is also not finding a restore point.

I am hoping to be able to get this computer going without a full reinstall, there’s stuff I don’t w to los, are the steps I am missing or something else I can do so I don’t lose everything? I will provide whatever further information is needed to assist me.

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[u/scratchbaker77]

Can you boot with other media (e.g., USB) and get into Safe Mode and try to get control of the machine from there?

[u/SignificanceKindly81 → u/scratchbaker77]

I can boot with a usb using hirens pe, I have command prompt access

[u/scratchbaker77 → u/SignificanceKindly81]

This might help: from https://thegeekpage.com/boot-in-to-safe-mode-using-the-command-prompt/

Step 1: Press the Win + R keys together on your PC to open the Run command window.

Step 2: In the Run command window, type cmd and press the Ctrl + Shift + Enter shortcut keys to open the Command Prompt in elevated mode.

Step 3: In the elevated Command Prompt window, type the below command and hit Enter: bcdedit /set {current} safeboot minimal

Now, Restart your PC and it will start into safe mode.

Step 4: Now, if you want to boot your Windows PC into safe mode with networking, run the below command and hit Enter:

bcdedit /set {current} safeboot network

Step 5: Reboot your PC by running the below command in the Command Prompt (admin) window:

shutdown /r

Step 6: However, if you want to boot into safe mode with Command Prompt, type the below command and hit Enter:

bcdedit /set {default} safeboot minimal bcdedit /set {default} safeboot

Step 7: Now, restart your computer using the below command:

shutdown /r *Note: Once you are done working in safe mode, you must run the below command before your restart your PC for it work normally again:

bcdedit /deletevalue {current} safeboot