Have you switched the wireless key to "on"?
Have you tried to connect first by ethernet cable?
You may find these HP product support notes on how to connect wirelessly using the HP wireless assistant useful.
Surface Pro (2017) vs Surface Pro 4
Where HTML5 is headed next
MacBook Pro v Surface Pro 5
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.