JSI Tip 0027 - Deleteing device drivers and services.

If you have a service or device driver that you want to remove:

In Control Panel /Services or /Devices, located the object and STOP it (if it is started). If it won't STOP, configure StartUp as Disabled and reboot.

Edit: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

Locate the object, highlight it, delete it.