Can't boot into Windows 10 after installing Ubuntu 16.04

Question

I've tried installing Ubuntu in UEFI mode on my PC using USB which already has windows 10 in it, but the problem is:

I'm unable to boot into my Windows 10. Moreover Ubuntu has not installed...
I've tried many tutorial videos on YouTube one of them is updating grub, but it is displaying in terminal that AUFS error.

Please help me in solving this issue.

It shows the below mentioned steps as soon as I started my PC:

1. Start PXE over IPv4 .press[esc] to exit
   after typing exit it again shows the thing mentioned below

2. Start PXE over IPv6 .press[esc] to exit
   It shows the below mentioned commands:

   failed to open \EFI\BOOT\mmx64.efi-not found
   failed to load image \EFI\BOOT\mmx64.efi-not found
   failed to start MokManager:not found
   

What can I do to fix this?