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• Problem: The adapter stops working for no apparent reason.
Solution: The network driver les may be corrupt or missing. Update the driver by referring to the
“Solution” description for the procedure to make sure that the correct device driver is installed in the
preceding problem.
• Problem: If your computer is a Gigabit Ethernet model and you use the a speed of 1000 Mbps, the
connection fails or errors occur.
Solution:
– Use Category 5 wiring and make sure that the network cable is securely connected.
– Connect to a 1000 BASE-T hub/switch (not 1000 BASE-X).
• Problem: Your computer cannot connect to the network at 1000 Mbps. Instead, it connects at 100 Mbps.
Solution:
– Try another cable.
– Make sure that the link partner is set to auto-negotiate.
– Make sure that the switch is 802.3ab-compliant (gigabit over copper).
A wireless LAN problem
• Problem: You cannot connect using the built-in wireless networking card.
Solution: Make sure that your wireless LAN driver is the latest version installed. Check the Web site and
conrm the driver version supported by Access Connections is the latest documented in the README le.
Make sure that your computer is within range of a wireless access point.
Make sure that the wireless radio is enabled by double-clicking the Access Connections icon in the
task bar.
Note: If your computer is a Windows 7 model, to display the Access Connections status icon and the
wireless status icon in the system tray, refer to the Access Connections on-line help.
Check Network Name (SSID), and your encryption information. Use Access Connections to verify this
case-sensitive information.
Note: Access Connections does not support connection to wireless WAN network in China.
A wireless WAN problem
• Message: Unauthorized WAN card is plugged in - Power off and remove the WAN card.
Solution: The WAN card is not supported on this computer. Remove it.
Note: Depending on your computer, some models do not have a wireless WAN.
Bluetooth problems
For Windows 7:
• Problem: Sound does not come from the Bluetooth headset/headphone but comes from the local
speaker even though the headset/headphone is connected using Headset prole or AV prole.
Solution: Do the following:
1. Exit the application that uses the sound device (for example, Windows Media Player).
2. Open the Control Panel by clicking Start ➙ Control Panel.
3. Click Hardware and Sound ➙ Sound.
4. Select the Playback tab.
Chapter 10. Troubleshooting computer problems 139