Downloads

Windows 10 Installation Media x86 (Removed)
Windows 10 Installation Media x64 (Removed)
Media Creation Tool (Removed)

NOTICE: This method has been depreciated due to its complexity and also Windows updates that have broken its ability to work for most users. As a result all downloads have been removed.

Follow THIS LINK for much simpler and more effective solution.

 

Written Instructions

You will need the following:

Windows 10 Installation Media (DVD/Bootable Flash Drive)

1.) Boot into Windows Setup
    - Click Next at the initial screen

2.) Click Repair Your Computer

3.) Click Troubleshoot

4.) Click Advanced Options

5.) Click Command Prompt

6.) Enter the following commands:
copy d:\windows\system32\utilman.exe d:\
copy d:\windows\system32\cmd.exe d:\windows\system32\utilman.exe
exit

NOTE: The drive letter containing your OS may not be the same. In my case it was D:

7.) Click Continue (Exit and continue to Windows 10)

8.) Click the Utility Manager icon on the bottom right
    (This will launch a command prompt)

9.) Enter the following command:
net user administrator /active:yes

10.) Restart the computer and log in as Administrator

NOTE: To restore the original utilman.exe file, follow steps 1-5 and enter the following command in the command prompt:

copy d:\utilman.exe d:\windows\system32