Windows 10: Bootmgr is missing

I had my pc running last month, then when I was on my laptop it started crashing, turned out it was due to an update from malware bytes
I eventually went to my main PC and all I get now is bootmgr is missing and all I get now is a black screen

I've tried putting in a pen drive with win 10 on it to do a start up repair, system restore etc, but nothing is working

:)

 

booting

Hi,

These should help :

Boot Manager is missing

https://support.microsoft.com/en-us...tmgr-is-missing-press-ctrl-alt-del-to-restart

BOOTMGR is Missing: Fix for Windows Vista, 7, 8, 8.1, 10

BOOTMGR is Missing: Fix for Windows Vista, 7, 8, 8.1, 10

Hope this helps.

--------------------------------------------------------------------------------------------

Rob Brown -
Microsoft MVP <- profile - Windows and Devices for IT : Bicycle - Mark Twain said it right.

 

Scary Startup.

We are volunteers willing to help you try to resolve this issue. I am Rob, a 10 time and dual award MVP specializing in Windows troubleshooting and Bluescreen analysis.

These should help :

Boot Manager is missing

https://support.microsoft.com/en-us/help/262280...

BOOTMGR is Missing: Fix for Windows Vista, 7, 8, 8.1, 10

BOOTMGR is Missing: Fix for Windows Vista, 7, 8, 8.1, 10

Please let us know the results and if you need further assistance.

 

When you boot the usb what happens how far do you get any error message

 

i can get to the options to install windows, or repair this PC, i can get onto the advanced options, then start up repair searches then doesn't work, there's no options for system restore etc

 

Open safe mode with command prompt:
Boot into Safe Mode on Windows 10 Windows 10 Tutorials

Hardware method to boot to the Windows advanced troubleshooting menu:
Power on > power off when you see the windows icon
Repeat power on > power off when you see the Windows icon.
Power on the third time and see if will open the computer's windows advanced troubleshooting menu.

If you cannot open the computer's windows advanced troubleshooting menu then you usually can open the windows advanced troubleshoooting menu on a bootable windows 10 iso:
Download Windows 10

For a custom desktop > temporarily change the BIOS boot order so that the external USB hard drive is on top.
Boot to the Windows 10 iso.
It may take 5 - 10 minutes for the iso to load while viewing the Windows icon
Select language, time, currency, and keyboard, or click next
Click troubleshoot
Start with startup repair. If startup repair fails move to the next step.
Click system restore > start with the oldest restore point and keep repeating until all restore points are used. If system restore fails or if there are no restore points move to the next step.

For these steps use a camera or smart phone camera to take pictures and post images into the thread.
Additional commands will be based on the results of these commands.

1) Open command prompt > administrator X:\windows\system32\cmd.exe > X:\Sources> type:
2) c:
3) dir
4) d:
5) dir
6) x:
7) bcdedit /enum
8) bcdedit | find "osdevice"
9) diskpart
10) list disk
11) list volume
12) select disk 0
13) list partition
14) select disk 1
15) list partition
16) exit
17) bootrec /fixmbr
18) bootrec /fixboot
19) bootrec /scanos
20) bootrec /rebuildbcd
21) chkdsk /r C:
reboot

 

So, which computer is not booting? The Laptop or the Desktop?
With the Windows installer Flash drive in, boot into Setup (Bios) go to the Security tab. If Secure Boot is enabled, Disable it or change it to Setup mode. If you see UEFI Bios, change it or add Legacy Boot. Your USB Flash drive should now show as a Legacy device. Move this to First Boot Device. Save and Exit.
Boot off the flash drive and follow the instructions in Post #4

 

it's my main desktop PC that won't boot up.
from the bootable flash drive, i can get into the windows advanced troubleshooting menu, but nothing is working from there on, i can get command prompt to work




it's an SSD if it makes any difference

I'll print off the replies & try the suggestions

cheers

 

OK if you are at the Advanced Options and Startup Repair, System Restore, and Command Prompt using the Commands in post #4 don't work, then choose Go Back to Previous Build
If all else fails, be prepared to reinstall Windows.

 

sounds like it, as nothing is letting me go back.
Still to do all the CMDs
No previous builds to go back to either.

I'm wondering if the SSD has failed?

If it's a reinstall, i'll go back to an HHD

 

Don't see a solved option on my phone?

 

Please use a camera or smart phone camera to post images into the thread for the commands in post #4.

Separate the steps into groups and see if any of these commands work:

1) c:
2) dir
3) d:
4) dir
5) x:

1) bcdedit /enum
2) bcdedit | find "osdevice"

1) diskpart
2) list disk
3) list volume
4) select disk 0
5) list partition
6) select disk 1
7) list partition
8) exit


1) bootrec /fixmbr
2) bootrec /fixboot
3) bootrec /scanos
4) bootrec /rebuildbcd

1) chkdsk /r C:
reboot

1) bootrec /rebuildbcd