Lenovo ThinkStation P500, Hardware Maintenance Manual, Page: 94 / 232

meters. If the cable is connected and the distance is within acceptable limits but the problem persists, try
a different cable.
• The cable is installed properly.
• Update or reinstall the Ethernet LAN driver. See “Keeping your computer current ” on page 77.
• The switch port and the adapter have the same duplex setting.
If you configured the adapter for full duplex, ensure that the switch port is also configured 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.
The adapter stops working for no reason
Solution: The network driver files might be corrupt or missing. Update the driver by referring to the “Solution”
description for the previous problem to ensure that the latest device driver is installed.
The Wake On LAN feature is not working
Solution: Enable the Wake On LAN (WOL) feature in the BIOS program.
My computer is a Gigabit Ethernet model and I use a speed of 1000 Mbps, but the connection fails
or errors occur
Solution: Connect the network cable to the Ethernet connector using Category 5 wiring and a 100 BASE-T
hub/switch (not 100 BASE-X).
My computer is a Gigabit Ethernet model, but it cannot be connected to the network at 1000 Mbps,
but at only 100 Mbps
Solutions:
• Try another cable.
• Set the link partner to auto-negotiate.
• Set the switch to be 802.3ab-compliant (gigabit over copper).
My computer cannot establish network connections by the built-in wireless
networking card
Solutions:
• Ensure that your wireless LAN driver is the latest version. Check the Web site and verify the driver version
supported by Access Connections is the latest documented in the readme file.
• Ensure that your computer is within the range of a wireless access point.
• Click the Access Connections icon in the Windows notification area to check if the wireless radio is
enabled. If the wireless radio is disabled, follow the onscreen instructions to enable it.
• Check the Network Name (SSID) and your encryption information. Use Access Connections to verify
this case-sensitive information.
Sound does not come from the Bluetooth headset or headphone
Solution:
1. Exit the application that uses the sound device (for example, Windows Media Player).
2. Open Control Panel.
Note: For information about how to open Control Panel on Windows 8.1, see “Accessing Control Panel
on the Windows 8.1 operating system” on page 52.
3. Click Hardware and Sound ➙ Sound .
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ThinkStation P500 and P700 Hardware Maintenance Manual