Windows 10: Trying to Rebuild bcd on Windows 10 Toshiba Satellite - Nothing Works

I am working on rebuilding the bcd on a Toshiba Satellite E45t-R4100 running Windows 10. The computer originally came with Windows 8, but I later upgraded to Windows 10.

The computer crashed when the battery completely ran out of charge while unplugged. When plugged in and rebooted the computer automatically ran startup repair, which was not successful and showed the standard Windows repair menu. I have done a significant amount of troubleshooting, and I will list the results below.

System restore from a restore point failed.

Running bootrec /rebuildbcd results in "Total identified Windows installations: 0"
Running bcdedit /export c:\bcdbackup results in "The operation completed successfully"
But attrib c:\boot\bcd -h -r -s results in "Path not found - C:\boot"

I tried generally following the instructions here C:\boot missing

And have the following partition and volume information

Partition # Type Size Offset
Partition 1 Recovery 450MB 1024KB
Partition 2 System 100MB 451 MB
Partition 3 Reserved 16 MB 551 MB
Partition 4 Primary 698GB 567 MB

Volume # Ltr Label Fs Type Size Status Info
Volume 0 Recovery NTFS Partition 450MB Healthy
Volume 1 C NTFS Partition 698GB Healthy
Volume 2 FAT32 Partition 100MB Healthy Hidden
Volume 3 D ESD-USB FAT32 Removable 14 GB Healthy

I have reformatted partition 2 and rebuilt the bcd using the following commands

diskpart
sel dis 0
sel par 2
del par override
cre par EFI
for fs=FAT32 quick
assign letter=T
exit
bcdboot C:\Windows /s T: /f ALL
exit

Everything completed successfully but when rebooting the computer I receive the following error.

Recovery
Your PC/Device needs to be repaired
The operating system couldn't be loaded because a critical system driver is missing or contains errors.

File:\Windows\system32\DRIVERS\klbackupdisk.sys
Error code: 0xc000007b


I have recovery media for Windows 10 and tried the commands again just to make sure I didn't miss anything and the computer gave me the same error notice.
By the way, I did verify that the computer has a GPT partition style.

I also ran scan disk (chkdsk) from command prompt which returned no errors of any kind.

If at all possible, I would like to avoid a complete system restore/reinstillation of Windows.

Any help you can give would be appreciated.

:)

 

How to clean up BCD entries? Rebuild the BCD?

This is normal that under Recovery Environment, The letters are re-assigned. This is why you have to be careful and select the correct one.
@dictum
Advice: Never use Easy BCD with Windows installed using GPT disk. Use Easy UEFI instead provided you know what you are doing. Easy BCD only works with MBR disk type.
Base on the screen shot above. Your disk 0 is your new Windows and your disk 1 contains the old Windows. Disk 3 contains a 512MB Fat32 partition and I don't know what that is. I suggest you disconnect disk 3 for now before proceeding.

Let rebuild new BCD's for both disk 0, and disk 1. Please follow step by step on the 2 screen shots below. On step 3, write down the drive letter for PM981_New. In the screen shot, My Windows is still assigned to C but it might be different from yours. In step 10, if the drive letter is different than C, then use the letter in step 3.

Do exactly the same for disk 1, this time select disk 1 in step 4 and assign letter V in step 7, Use V and the drive letter for Old Windows in step 10. This will create a new BCD for PM981_Old and you will be able to boot separately from boot menu.

From boot menu, select which one to boot from.
Once booted into Windows. If you wish, you can set up dual boot for Windows old & New. Under This PC, look for the drive letter of the offline Windows and type:
bcdboot X:\Windows where X is the letter of the offline Windows

 

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