April 2015 Windows 8.1 Update: winload.efi error 0xc000000f

2

I have an Acer V3-772g: Intel i7 4712MQ, NVIDIA 750m 4 GB

I installed the newest Windows 8.1 updates a couple days ago; however, the update failed. I left the computer to update and then went to work, so I wasn't able to see where the computer left off and all.

When I went to reboot, I got a blue screen error. I don't remember the boot error for that HDD. Luckily, I had a backup disk with the Acer OEM Windows 8.1. I had thought I disabled Windows Update, but it had already installed. I went to reinstall Visual Studio 2013, and it said I needed to restart my PC first. I didn't think anything about it and preceded to restart my computer.

When I came back the computer had completely shut off and didn't do the complete reboot, so I turned the computer on.

Now I get error code 0xc000000f

The application or operating system couldn't be loaded because a required file is missing or contains errors.
C:\Windows\system32\winload.efi

It then gives me the option to boot up into the startup settings, try again, or boot into the UEFI settings.

When I boot into the recovery flash drive and access the terminal, I can run bootrec /scanos and my Windows 8.1 install is located. However when I run the /fixboot command, it says the system could not find the file specified.

Update: bootrec /fixmbr and bootrec /fixboot both return The system cannot find the file specified. However, bootrec /scanos returns total identified Windows installations: 1 and tells me it's on the D: drive.

  1. Has anyone else had this issue with the April Windows update?
  2. What is the best method to proceed with fixing this?
windows-8
boot
windows-8.1
bootloader
asked on Super User Apr 19, 2015 by Andrue • edited Apr 19, 2015 by Andrue

1 Answer

1

I somehow looked over the different options for bootrec.exe. I was able to do bcdboot D:\windows

D:\Windows\ is the location of the Windows folder on the drive. When booting from a recovery disk to as follows:

  1. bootrec /scanos //hopefully this will show the drive letter of the OS installation
  2. bootrec /fixmbr
  3. bootrec /fixboot //note that these two commands did not work for me. I received an error that said the system can't find the file specified. I believe the update deleted the files these two commands edit.f
  4. bcdboot {path_to_Windows_folder} // this should have shown in the first step

I hope this fixes the 0xc000000f problem others may receive because of the Windows update.

answered on Super User Apr 19, 2015 by Andrue

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