Boot device not recognized after update

David S 20 Reputation points
2025-09-15T17:45:48.4633333+00:00

After installing most recent update for Win. 11 the pc doesn't recognize boot system installed on my ssd. After attempting for repair using usb installation image the system doesn't show any progress and cannot repair system files. I was about to contact Microsoft support when i noticed they will be available at 8 AM (I think) in the morning.

Windows for home | Windows 11 | Windows update
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Answer accepted by question author
DaveM121 948.5K Reputation points Independent Advisor
2025-09-15T18:25:42.5+00:00

Remove the USB from your PC, then start your PC, what error do you see, is it a blue screen error or is it a black screen indicating the internal drive cannot be found?

1

If that is a blue error screen, are you able to access the recovery environment using these steps?

Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down

Do this twice

On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt... etc.

Please try each option one at a time, then see if Windows will boot.

.

If there is an option to uninstall the latest update, that may be the best option

.

Go to Troubleshoot - Advanced Option - Command Prompt.

Run this command and press Enter.

bootrec /FixMbr

Run this command and press Enter.

bootrec /FixBoot

Run this command and press Enter.

bootrec /ScanOs

Run this command and press Enter.

bootrec /RebuildBcd

Then reboot your system to see if Windows will boot up normally.

2

If you are seeing a black screen error on start-up indicating no boot device found, boot your system into BIOS, go to the Boot Priority list, is 'Windows Boot Manager' set as the primary boot device?

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