How to enable disabled\unused sounds?

Hello,
I would like to know how to enable sounds that are unused or disabled in Windows 8, for example, the shutdown sound. I've seen on another website that there's a registry tweak for the sounds to appear in the Sound control panel, but my problem is that the sounds aren't playing. Is there a fix for this?

right-click on your desktop and go to personalize settings and there click sounds at the bottom and there you wil probably find it