Samsung NP-N310 User Guide - Page 166

Q I cannot connect to an AP. (The wireless connection is disconnected frequently.)  Check the Network Key. A Right-click the Wireless Network Connections icon from the Taskbar and click View available wireless networks. If wireless networks are found, it indicates that the device is operating properly but the network settings may have a problem. Please check the Network Key (Encryption Key) and the AP settings.  Check if there is a device nearby using the same frequency band. A1 If there is a device nearby using the same frequency band such as another wireless LAN device, wireless video transceiver, microwave oven, plasma bulb, etc., channel interference may occur. If you experience interference from another device, it is recommended changing the AP channel. A2 When operating in EEE802.11g mode, if there is a IEEE802.11b device operating nearby, you may experience low data rates or even disconnection as it operates in Hybrid mode.  Check the authentication type. A A connection may be disconnected after a period of time if the "Use IEEE 802.1x network authentication" option is selected when IEEE 802.1x authentication is not being used. View the properties of the corresponding AP in the Wireless Network Properties. In the Authentication tab, unselect the "Use IEEE 802.1x authentication in this network" option. For detailed information on the authentication server, ask your network administrator.  Check the AP settings. A1 Check if the surroundings are appropriate for a wireless LAN. A wireless LAN connection may be limited by the surrounding environment and distance. Obstacles such as walls and door mats affect the quality of the wireless LAN signal. You have to install an AP in a high, open position far away from any other radio signal sources. 165