In hardware manager is anything at all showing for the modem, such as 'unknown device'?
is it an internal PCi card modem or a USB one?
Sadly with out more info about the PC not a lot more i can think of.
Hands-on: Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
Samsung's beautifully designed Galaxy S8 makes for better VR experiences too
47 iPhone camera tips to help you take better photos
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.