Problem: How can Oracle services from a partial install be deleted?

Solution: Delete the key for the service from the registry.

Regedit > HKEY_LOCAL_MACHINE > System > Current Control Set > Services

Delete the key.

Reboot.

See also: http://www.mvps.org/winhelp2002/services.htm

tasklist /svc

Note: to temporarily disable a Service while troubleshooting:

Start | Run (type) “msconfig” (no quotes)

Click on the Services tab, uncheck desired service. (for testing only!)

Start > Run > services.msc