Kyroix 74

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Jul 24, 2020
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Hi, i recently did a Windows quality update and i got several pop ups after a reboot saying ‘We couldn’t complete the updates, undoing changes’. This kept coming up. But one time i booted up my pc and it did not start up, instead giving me the screen to the advanced repair mode. I did all the options in the troubleshoot section, nothing worked. I did the command prompt, and ran a couple commands including BCD. It appears my BCD is corrupted. So i did the BCD repair commands, but they didn’t work. So i was stuck.

I clicked "Continue to Windows", but didn’t go back to the same screen, instead the horrible ‘Your device/pc needs to be repaired’. And the 4 options to boot on the advanced recovery, BIOS, and 2 others i forgot. I tried pressing F1 which was the allocated button for booting into the Advanced recovery again, but it didn’t work instead yakking me back to the same screen.

So currently i am stuck on the repair screen, not able to do anything on it except use the button to go into BIOS, but i don’t think i can do anything in that to get into Windows. So i think, 99% my BCD being corrupted is what caused my Windows to not boot up. I need some help because Resetting the PC is my last resort. I hope this massive oarsgraph makes sense to you.
 

Kyroix 74

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Jul 24, 2020
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if you dont mind then, inform me when you have created a windows 10 installer on your pendrive :D
Hi, i don’t have the usb yet, but i have a question. When i plug in this usb flash drive, with the installation of windows on it, do i boot into BIOS and set the boot to the flash drive?
 

Kyroix 74

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Jul 24, 2020
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I think the BCD is corrupted. I did the advanced recovery options like command prompt and ran the BCD Commands and it said it was corrupted. Now I greet the repair screen every reboot. Should I get a usb flash drive and install Windows recovery on it or install a windows installation guide on it? which one?
 

Kyroix 74

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Jul 24, 2020
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Yes sir, you could just do boot override and pick the flash drive, there you will boot to the windows installer. also for the usb just buy any cheap 8gbs drive.
So does this windows installation tool that is on the usb drive perform a full reset and reinstall? Or like a ‘Choose what to keep before you reset’ sort of thing? Also once i get the usb flash drive and have the windows installer thing on it, what do i do next? Just want to know in advance
 
So does this windows installation tool that is on the usb drive perform a full reset and reinstall? Or like a ‘Choose what to keep before you reset’ sort of thing? Also once i get the usb flash drive and have the windows installer thing on it, what do i do next? Just want to know in advance
nope, just repairing the BCD, thats why a windows installer from a pendrive is needed
 
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I did the command prompt, and ran a couple commands including BCD. It appears my BCD is corrupted. So i did the BCD repair commands, but they didn’t work.
What commands did you try?
Main command to use in this situation is bcdboot command.
syntax: bcdboot X:\windows /s Y:
(X: windows OS partition, Y: bootloader partition. You have to find correct drive letters first)
If you didn't use it, then it's highly unlikely to fix corrupted bcd store.
 

Kyroix 74

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Jul 24, 2020
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What commands did you try?
Main command to use in this situation is bcdboot command.
syntax: bcdboot X:\windows /s Y:
(X: windows OS partition, Y: bootloader partition. You have to find correct drive letters first)
If you didn't use it, then it's highly unlikely to fix corrupted bcd store.
I think i did that one and a couple others can’t remember
 
Do you even have a MBR disk on Legacy BIOS? Because that's what the fixmbr and bcdboot C:\Windows are for.

For a GPT boot disk it's either bcdboot C:\Windows /s s: /f all or bcdboot C:\Windows /s s: /f uefi

Keep in mind that just replacing the BCD can lead to all sorts of things not working anymore like System Restore or Hibernation because they will point to a missing volume
 
Ok, can you tell me some commands to fix it?
Told you already. Post #15.

If you have trouble finding correct drive letters for OS partition and bootloader partition in windows recovery environment,
then execute following commands, make a photo and show us here (upload to imgur.com and post link)
diskpart
list disk
select disk 0
list partition
list volume
 

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