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I've been trying to solve the problem on my own using this forum and others but I can't fix it. I had ubuntu and windows 10 installed and both worked fine. Then, a week ago or so, windows was updated and grub disappeared. I finally had the time yesterday to try and restore grub and I managed to do it using Boot-repair on a live cd, but now the problem is the opposite: I get the grub screen but when I select the windows option (any of the 3) I only get a black screen. Here is the boot-repair info for the grub restoring:

paste.ubuntu.com/14581993

The grub screen shows these options:

  1. Ubuntu
  2. Advanced options for ubuntu
  3. Windows UEFI bootmgfw.efi
  4. Windows Boot UEFI loader
  5. EFI/Ubuntu/MokManager.efi
  6. Windows Boot Manager (on /dev/sdb2)
  7. System Setup

From what I've gathered reading some posts, i may have to edit the 6th entry? But I've no idea of what to change so help is much apreciated.

Thanks in advance!

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You have to select the #6 option i.e. Windows Boot Manager (on /dev/sdb2) to get into Windows. Once you are in Ubuntu you can try this

sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update
sudo apt-get install grub-customizer
grub-customizer

and move the Windows entry up so that your laptop/desktop goes directly into Windows.

I will suggest to remove these three entries Windows UEFI bootmgfw.efi Windows Boot UEFI loader EFI/Ubuntu/MokManager.efi

You can refer to this thread remove un-necessary EFI entries

Hope this helps

  • Hey, thanks a lot. The thing is, I do select that option, but Windows doesn't start, I just get a blank screen. – Tamara Dominguez Poncelas Jan 21 '16 at 12:17

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