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– Ensure that the switch is 802.3ab-compliant (gigabit over copper).
A wireless LAN problem
Problem: You cannot connect to the network using the built-in wireless network card.
Solution: Make sure that:
• Your wireless LAN driver is the latest version.
• your computer is within range of a wireless access point.
• The wireless radio is enabled.
Make sure that the wireless radio is enabled by double-clicking the Access Connections icon in the Windows
notication area.
For Windows 7 operating system, check the Network Name (SSID) and your encryption information. Use the
Access Connections program to verify this case-sensitive information.
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 card.
Bluetooth problems
Note: Check your connection anytime and ensure that no other Bluetooth-enabled device is searching for
the device to which you want to connect. Simultaneous searching is not allowed in the Bluetooth connection.
• 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 program that uses the sound device (for example, Windows Media Player).
2. Open Control Panel and click Hardware and Sound ➙ Sound ➙ Playback.
3. If you are using Headset prole, select Bluetooth Hands-free Audio and click the Set Default
button. If you are using AV prole, select Stereo Audio and click the Set Default button.
4. Click OK to close the Sound window.
• Problem: PIM (Personal Information Manager) items sent from Windows 7 operating system cannot be
received correctly into the address book of any other Bluetooth-enabled device.
Solution: The Windows 7 operating system send PIM items in XML format, but most Bluetooth-enabled
devices handle PIM items in vCard format. If another Bluetooth-enabled device can receive a le
through Bluetooth, a PIM item sent from the Windows 7 operating system might be saved as a le
with the extension .contact.
Problems with keyboard and other pointing devices
The following are the most common keyboard and other pointing devices problems.
UltraNav pointing device problems
• Problem: The cursor drifts when the computer is turned on or after it resumes normal operation.
Chapter 10. Troubleshooting computer problems 137