Lenovo Y40-70 - Manual (Page 27)

Chapter 2. Starting to use Windows 8.1
21
Connecting to a wireless network - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Enabling wireless connection
To enable wireless functions, do one of the following:
• Press Fn + F5 to disable airplane mode.
• Open the charms and select Settings

to open the network
configuration page. Then toggle the airplane mode switch to Off.
Connecting to a wireless network
After wireless has been enabled, the computer will automatically scan for
available wireless networks and display them in the wireless network list. 
To connect to a wireless network, click the network name in the list, and then
click Connect.
Note: Some networks require a network security key or passphrase for connection. 
To connect to one of those networks, ask the network administrator or the Internet
service provider (ISP) for the security key or passphrase.