Try this:
http://support.microsoft.com/kb/892199
http://www.techspot.com/vb/topic16323.html
Hope this help, let us know!
"Doug" wrote:
> One of the PCs on our corporate network will not start Windows Firewall.
> There is no other firewall installed.
> When I click on the firewall in Control Panel, I get a message that the
> service isn't started and do I want to start it. If I click yes, I get a
> message that it can't start.
>
> When I run services from Admin tools and right-click on the firewall then
> click start, I get Error 5 Access Denied.
>
> Even running as administrator I get the same error.
>
> What do I need to do to fix?
> --
> Doug