This might get a little long but I'll try to keep it as simple as possible. So the other day I tried plugging my iphone in and it didnt sync it said "This iPhone cannot be used because the Apple Mobile Device service is not started" so I looked into it and went to Services and tried hitting Start but every single time it brings up "The Apple Mobile Device Service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs." And I've tried everything I've tried on the Apple Mobile Devices programs under the General Tab switching it from disabled to Automatic and it does nothing it asks for a log in username and password under the Log On tab and I have no clue about it. Please if anyone could help me out it would be greatly appreciated thank you