Lenovo E525 Tablet User Manual


 
3. Click Update Driver Software, and then follow the instructions on the screen.
The switch port and the adapter have the same duplex setting.
If you congured the adapter for full duplex, make sure the switch port is also congured for full
duplex. Setting the wrong duplex mode can degrade performance, cause data loss, or result in lost
connections.
You have installed all networking software that is necessary for your network environment.
Check with your LAN administrator for the necessary networking software.
Problem: The adapter stops working for no apparent reason.
Solution: The network driver les might be corrupt or missing. Update the driver by referring to the
“Solution” description in the preceding problem for the procedure to make sure that the correct device
driver is installed
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 network card.
Solution: Make sure that your wireless LAN driver is the latest version installed. Check the Web site and
conrm 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 on the
taskbar.
Note: For instructions on how to display the Access Connections status icon and the wireless status icon
in the Windows notication area, refer to the Access Connections help information system.
Check Network Name (SSID) and your encryption information. Use the Access Connections program to
verify this case-sensitive information.
Bluetooth problems
Problem: Sound does not come from the Bluetooth headset or headphone but comes from the local
speaker even though the headset or headphone is connected using a Headset prole or AV prole.
Solution: Do the following:
1. Exit the application that uses the sound device (for example, Windows Media Player).
2. Open Control Panel by clicking Start Control Panel, and click Hardware and Sound Sound
then select the Playback tab.
3. If you are using a Headset prole, select Bluetooth Hands-free Audio and click the Set Default
button. If you are using an AV prole, select Stereo Audio and click the Set Default button.
4. Click OK to close the Sound window.
Chapter 9. Troubleshooting computer problems 121