http://bugs.winehq.org/show_bug.cgi?id=21938
--- Comment #8 from Austin English austinenglish@gmail.com 2010-03-06 11:18:00 --- I'd try checking the services set to run automatically or that are disabled, as well as any relevant registry entries.
Perhaps someone that has windows 7 in a vm could snapshot it and check the registry for differences?