For x86: Take ownership of explorer.exe and give yourself full permissions to it. (Right click on it > Properties > Security Tab > Advanced > Owner Tab > Edit > Click on Administrators > OK > OK > OK > OK > YES then Right Click on the file again, Properties > Security Tab, click on EDIT > Click on Administrators, Full Control: Allow > OK > OK)
Rename explorer.exe by explorerBackup.exe
Then paste the explorer.exe modified.
Open the prompt of commands and send "tskill explorer".