another error for this solution is

Software Licensing Service will not start

If you have acces to the Start button:

1) Click the Start button

2) Type: cmd in the Start Search field

3) At the top the Start window, you will see cmd.exe

4) Right Click cmd.exe and select Run as Administrator

5) Type: net start slsvc

If you do not have access to the Start button:

1) Click the option Access computer with reduced functionality

2) A Browser will open, type: %windir%\system32 into the address field

3) Find the file cmd.exe

4) Right Click on the cmd.exe and select Run as Administrator

5) Type: net start slsvc

or

All you have to do is to go to C:\windows\, right click system32 folder and clear the read only chech box. It will work.