I would guess by uninstalling the whole Folding@Home software package.

But I also found out an older post that might help you: "Run > msconfig; establish whether or not it's been installed as a sevice or is in the startup tab. If it's under the startup tab just see where it's located and find at that location using regedit and delete it. If it's a service I'll look up how to remove services if that's the case.


Ok, if it's a service it'll be located here:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es]

Find F@H and delete it."