Instant Sheller wont undo

[AwesomeAlbert]

I installed instant sheller to hide the os. when trouble shouting i undo the settings. this last time, the undo button didnt work, i go back and its the same. i turn on instant sheller again and i get the im ready to do it button. what went wrong? how do i fix it?

[Deadly]

I installed instant sheller to hide the os. when trouble shouting i undo the settings. this last time, the undo button didnt work, i go back and its the same. i turn on instant sheller again and i get the im ready to do it button. what went wrong? how do i fix it?

Taken from the hide desktop guide for Mame

HKEY_CURRENT_USER \Software\Microsoft\Windows NT\CurrentVersion\Winlogon

Look for a string entry called 'Shell'. If it is not there, create a string entry and name it 'Shell'. Set the value of this entry to the name and location of your Front-end. For Dragon King, the shell entry may be "C:\MAME\The Dragon King.exe" or wherever your Frontends executable is located. To repair this if anything happs, boot into safe mode, go into regedit, and change this value to "explorer.exe". When you reboot, you will find that you enter windows, and not your frontend! Simple!