Lenovo IdeaPad S100 - Manual (Page 27)

Chapter 3. Connecting to the Internet
23
1 Make sure the wireless network card is enabled and the computer is
placed within the coverage range of the wireless network.
2 Go to Control Panel on your computer and click Network and Sharing
Center ; click Connect to a network to display all wireless networks
within range.
3 Select the name of your wireless network and click Connect; enter your
security key when prompted.