8-10 TroubleshootingThe serial mouse does not work.z Make sure that the mouse cable is properly connected.z Make sure that you connect the mouse before booting the computer.LAN ProblemsI cannot access the network.z Make sure that the LAN driver is correctly installed.z Make sure that the LAN cable is properly connected to the RJ-45connector and the network hub.z Make sure that the network configuration is appropriate.z Make sure that the user name or password is correct.WLAN ProblemsI cannot use the WLAN feature.z Make sure that the Mini PCI WLAN card is correctly installed.z Make sure that the necessary driver(s) is correctly installed.z Make sure that the WLAN feature is turned on.Transmission quality is poor.z Your computer may be in an out-of-range situation. Move yourcomputer closer to the Access Point or another WLAN device it isassociated with.z Check if there is high interference around the environment and solvethe problem as described next.Radio interference exists.z Move your computer away from the device causing the radiointerference such as microwave oven and large metal objects.z Plug your computer into an outlet on a different branch circuit fromthat used by the affecting device.