Samsung NP20 User Manual page 106

Q4 I cannot connect to the AP wireless network.
A1 Check the wireless LAN radio environment. Using a wireless LAN may be
restricted by the surrounding radio environment, and the distance between
wireless stations. Also obstacles such as walls or doors may affect wireless LAN
connections.
A2 Check that the AP is operating properly. Turn the AP off, and turn it on after a
short wait.
A3 Check that the network key (encryption key) configuration for the AP is correct.
Q5 In the Windows XP 'Available wireless networks' window, the Wireless
Network Connection is displayed as 'Not Available'.
A1 Check that the specific program for a wireless LAN connection is installed.
Windows XP supports wireless LAN connections through the Wireless Zero
Configuration (WZC) service. Therefore, an additional program for a wireless
LAN connection is not required. However, installation of the specific program
for a wireless LAN connection may disable the 'Available wireless networks'
window of the Wireless Network Connection supported by WZC service in
certain cases. Exit the program and try again.
A2 Initialize the device driver.
Click Start > Control Panel > Performance and Maintenance > System >
Hardware tab > Device Manager > Network adapters, and select the wireless
LAN adapter. Right-click the network adaptor and select 'Disable'. Then right-
click over the network adaptor and select 'Enable' after a short wait to check that
the device is operating properly.
Q6 I have installed Windows 2000, the wireless LAN driver and wireless LAN
program, but I cannot connect to the wireless LAN.
A Check if there is D:\Driver\WirelessLan\Win2000\Patch folder in the system
software CD supplied with the computer. If there is a patch folder and a patch file
in it, you have to apply the patch program provided by Microsoft for Windows
2000. Run the patch in the appropriate folder depending on the version of the
service pack. Since this problem is caused by a specific wireless LAN card, you
do not have to apply the patch if there is no patch folder.
For more information on Windows 2000 patch, refer to the following link for
known problems with Microsoft.
Troubleshooting 91