Please help! 0xc00000e - cannot boot

Hi, when I boot I see the error

0xc00000e​

• A blue screen with the headline "Your PC Needs To Be Repaired" with the text "A required device isn't connected or can't be accessed."

Choosing any of the available options either does nothing or reboots to the same screen.

Context: I recently migrated my Windows 11 from one drive to another. Essentially I made an exact copy of the old hard drive, an Intel Optane SSD, onto my second SSD, a Corsair MP510. I have been booting and using Windows 11 from the new drive fine for days. Both SSDs are still on the computer.

I decided last night to format the Optane. It had three partitions including the main partition, a recovery partition (700mb) and something else (100mb). Formatting it with either fast or slow format within Windows didn’t seem to work at all. So I cleaned it using DiskPart on Terminal (admin) and re initialised it using drive manager. It all seemed fine.

The next time I booted I see the BSOD.

I’ve checked the BIOS and it is still set to boot to the new drive under boot manager. Strangely the Optane I formatted doesn’t seem to be visible in BIOS.

I’m not sure if it’s relevant but the Optane, because I used to boot into Windows on it, before I copied everything to the other drive, was always listed in the BIOS with ‘Windows Boot Manager’ next to it. Was Windows still looking for files on it or was the computer still considering someone on it important even though I was booting to the other drive?

What has happened and what can I do?

Thanks

In this video, i will guide you on how to fix "A Required Device Isn't Connected or Can't Be Accessed" error on Windows.

Ahh, I remember in your other thread several members advised you to kick that optane drive to the curb.
You can try suggestions here but I suggest you reinstall your old drive.

See if this video has any useful troubleshooting steps:





Create a bootable Windows 11 Media Creation Tool (MCT) (Windows 11 iso)

glasskuter said:

Ahh, I remember in your other thread several members advised you to kick that optane drive to the curb.
You can try suggestions here but I suggest you reinstall your old drive.

How to Fix Windows 10 Error Code 0xc00000e

The error code 0xc00000e is a Windows 10 BSOD error that appears during the startup. Let's troubleshoot the problem with these solutions.

www.makeuseof.com

Click to expand...

Well, that’s what I thought I did! I moved (copied) my Os to the other drive and formatted the Optane. Unfortunately it seems that Windows boot manager or the master boot record, or something, didn’t like me doing that. That drive continued to appear in the BIOS with ‘boot manager’ next to it. And wiping it clearly mucked something up! Apparently I damaged the master boot record. I pulled the Optane physically out and did a clean install on the good drive using a usb. It didn’t take long and my files etc came to me from a back up the previous day.

FreeBooter said:

In this video, i will guide you on how to fix "A Required Device Isn't Connected or Can't Be Accessed" error on Windows.

Click to expand...

You cannot use the bootrec /fixboot command because the command is blocked in both Windows 10 (from version 1709) and Windows 11.

bootrec /fixboot ===> Access is denied.

edit: Both on GPT and MBR disk.

When using Command Prompt to fix boot-related issues, it is common to face the “bootrec /fixboot Access is denied” error. There are many possible reasons for this problem to occur on your computer. In this video, i will help you troubleshoot this error.

@FreeBooter

There is nothing wrong with my computer.

Clean install Windows 10/11 and then try the bootrec /fixboot command.

aubergine said:

@FreeBooter

There is nothing wrong with my computer.

Clean install Windows 10/11 and then try the bootrec /fixboot command.

Click to expand...

Then what is your problem, telling me bootrec does not work.

@FreeBooter

I'm trying to tell you that your youtube tutorial is outdated because the bootrec /fixboot command can no longer be used.

aubergine said:

@FreeBooter

I'm trying to tell you that your youtube tutorial is outdated because the bootrec /fixboot command can no longer be used.

Click to expand...

What, stop talking nonsense i can see you have not watched any of those two videos where i have shown how to use Bootrec /fixboot command.

@FreeBooter

I'll stop here now because you don't want to learn anything new.

I was just trying to kindly let you know about a new feature in Windows 10/11.

I don't need your misunderstanding information that you come up yourself and who said i need to learn anything from you, stop confusing people with your nonsense that holds no true.

I haven't tested it myself but it seems it could be a genuine change: Redirecting

I had the same issue with the command Bootrec /Fixboot "Access is denied",

This only happens with Windows 10 1709 install media.

I tried the same command with Windows 10 1703 install media and do not get the error "Access is denied".

This looks like an error with the install media for Windows 10 1709

Regards

Mark

Click to expand...

Bootrec is a holdover from the Windows 7 era.

bootrec/ fixboot: It will write a new boot sector to the system partition by using a boot sector that’s compatible with your computer. You should run the command when the boot sector is damaged or replaced with a nonstandard boot sector.

Click to expand...

A boot sector is the sector of a persistent data storage device (e.g., hard disk, floppy disk, optical disc, etc.) which contains machine code to be loaded into random-access memory (RAM) and then executed by a computer system's built-in firmware (e.g., the BIOS).

Usually, the very first sector of the hard disk is the boot sector, regardless of sector size (512 or 4096 bytes) and partitioning flavor (MBR or GPT).

Click to expand...

That doesn't answer the question about wherever bootrec still works on builds greater than 1703, I'm not saying you're right or wrong, I'm just curious if this is actually true and wherever you've actually tested it yourself or someone else has?

x BlueRobot said:

That doesn't answer the question about wherever bootrec still works on builds greater than 1703, I'm not saying you're right or wrong, I'm just curious if this is actually true and wherever you've actually tested it yourself or someone else has?

Click to expand...

IF boot sector does not exist and does not get corrupted then why Microsoft still give us Bootrec /Fixboot command-line after all they can remove this command anytime they want if it has no use.

Also, i have been reparing PC and operating systems more than 25 years doing PC repair if i did not test it then what good am i as a PC repair Technician.

FreeBooter said:

IF boot sector does not exist and does not get corrupted then why Microsoft still give us Bootrec /Fixboot command-line after all they can remove this command anytime they want if it has no use.

Click to expand...

That boot sector is there for legacy reasons only. You would have to ask Microsoft why they would return an error message rather than removing it completely. However, speaking from experience as a developer, sometimes that is easier said than done.

FreeBooter said:

Also, i have been reparing PC and operating systems more than 25 years doing PC repair if i did not test it then what good am i as a PC repair Technician.

Click to expand...

Okay, so you've tested it on a Windows 10 1709 build and it worked? That's all you had to say.

I don't know what commands work as never needed to use as using image backups but the Dell site also mentions this,

Windows 11 and Windows 10 (Version 1709 and newer):​

1. Rebuild the BCD store.
   1. First run the command below to back up the old BCD:
      ren BCD BCD.bak
   2. Now re-create it using this command:
      bcdboot c:\Windows /s <boot letter>: /f ALL (You can add a switch before /s for the computer locale: /l <language code>. By default, /l en-us English USA is used.)
   3. bootrec /rebuildbcd

Fabler2 said:

I don't know what commands work as never needed to use as using image backups but the Dell site also mentions this,

Windows 11 and Windows 10 (Version 1709 and newer):​

1. Rebuild the BCD store.
   1. First run the command below to back up the old BCD:
      ren BCD BCD.bak
   2. Now re-create it using this command:
      bcdboot c:\Windows /s <boot letter>: /f ALL (You can add a switch before /s for the computer locale: /l <language code>. By default, /l en-us English USA is used.)
   3. bootrec /rebuildbcd

How to Repair the EFI Bootloader on a GPT Hard Drive for Windows Operating Systems on your Dell Computer | Dell UK

Click to expand...

BCDBoot is a command-line tool used to configure the boot files on a PC or device to run the Windows operating system.

You can't use it to repair damaged boot sector on a storage drive.