Post Mortem No CD

[advgamer]

I have used the Post Mortem v1.0 [ENGLISH] No-CD/Fixed EXE
I did what the Read Me instructed:
Install the game - Full Installation.
Replace the original POST MORTEM.EXE executable with the one from the Executable Archive.
Execute the REGSETUP.EXE file to update the windows registry.
I have finished the game. My problem is ever since I installed this and used this my computer won't shut down. Is there something I should take out of the registry, from that REGSETUP.EXE ?
Thank you for any advice.