While you install any apple product, Bonjour service gets install. Bonjour service runs a component in backgroud consuming unnessery 5 MB memory, called mDNSResponder.exe.
To Stop unwanted Bonjour service .
> Open taskbar and select mDNSResponder.exe and hit end service.
> Go To control Panel > Administrative Tool >Service
> Now Find Bonjour server.
> Right click on Bonjour service and select propertises.
> Now in general tab, select start up type Disable
> Service Status = Stop.
Your Are Done.
If you have any query let me know.