Can you see your wifi networks in settings when you turn your wifi on ?
If you can and assuming they have good signal its probably an authentication error.
Or check that you haven't got an IP conflict, don't use fixed IP, use DHCP on your Q10 and router then turn your router and Q10 off and on and your router should then allocate it a place on your network.
In fact the first thing I would try before you do anything is to turn your router and box off leave about 10 seconds then turn back on.