Intel ICH10R Controller:ACHI Registry Listing omitted

Hi, I don't know what happened, I was wanting to get AHCI working in Windows 8 but someone had suggested to change a Windows registry setting and I did so so now it is no longer listed.

Long story short, I don't know how I can recover these settings without a backup. And I don't have one!!! :-|

Here is the location:

Boot WinPE or any Live *IX DVD and manually edit the registry on your computer to add the registry key back. Done this a few times works well. -WS

Thanks, I will definitely give it a try!