Samsung NP-N150 User Guide - Page 163

For Windows XP, double-click the icon and check if the IP address is properly allocated on the Support tab. If the IP is not allocated properly, the IP address will be displayed as follows (e.g. 169.254.xxx.xxx). If the network does not provide DHCP, you have to specify the correct IP address by asking your network administrator. Even if the network provides DHCP, the server may not allocate an IP address to the client properly, and the client station cannot connect to the network.  Check the AP Settings For the AP settings, refer to the User Guide provided by the AP manufacturer. A2 Verify whether the environment is suitable for using a wireless LAN. The use of a wireless LAN may be restricted according to the environment and distance. Obstacles such as walls or doors affect the use of a wireless LAN. Install the AP in a high and open space, 50cm from the wall and far removed from any other radio signal sources. A3 Verify whether the AP is operating properly.  When the AP is not operating normally, turn off the AP, wait a short while, and turn it on again.  Verify whether the AP's firmware is the most recent version. (Contact the AP manufacturer or the place where you purchased the AP for details of the AP firmware.) A4 Verify whether the AP has been properly connected to the network. Verify whether the network is operating normally by connecting the wired network cable, which has been connected to the AP, to your computer. A5 Check the network key settings (encryption key) again. When automatic code conversion (a passphrase function) has been selected and data communication is not functioning even with a normal wireless connection, it is recommended entering the network key (encryption key) manually. 162