The issue: “the access is denied” when executing bootrec /fixboot, this video will help you for sure.
1. To begin, make a bootable Windows 10 USB drive and then boot your computer using it.
When you get to the install windows screen, select the Repair your computer instead of Install now.
2. Click Troubleshoot and then click Advanced Options.
3. Then, select Command Prompt.
4. Now that you have opened Command Prompt, type following commands one-by-one and press Enter after each:
diskpart
list disk (Now check disk number to identify boot disk, this is usually Disk 0. if not, use the correct boot disk number.)
select disk 0 (or your boot disk number)
list volume (Now locate the volume number of EFI partition)
select volume 1 (Change volume to your number)
assign letter=V: (V: can be replaced by any drive letter that is not in use by any partition)
exit
V: (or the drive letter you just assigned)
md //efi//microsoft//boot//
cd /d V://efi//microsoft//boot//
bootrec /fixboot
bcdboot c://windows /l en-us /s V: /f all
5. Retry with bootrec /fixboot and the problem should be solved now.
6. Lastly, close Command Prompt and reboot to get the booting problem resolved.
bootrec /fixboot access is denied
fixboot access denied
bootrec /fixboot access is denied windows 10
windows 10 bootrec /fixboot access is denied

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