Performance And Lockup Problems - Lenovo M5800 User Manual

Machine types: 90ah and 10155

Hide thumbs Also See for M5800:

Maintenance manual (120 pages)

Setup manual (25 pages)

Table Of Contents

Table of Contents

• Ensure that the link partner is set to auto-negotiate.

• Ensure that the switch is 802.3ab-compliant (gigabit over copper).

A wireless LAN problem

Symptom: You cannot connect using the built-in wireless networking card.

Actions:

• 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 range of a wireless access point.

• Ensure that the wireless radio is enabled by double-clicking the Access Connections icon in the Windows

notification area.

• Check Network Name (SSID), and your encryption information. Use Access Connections to verify this

case-sensitive information.

A wireless WAN problem

Message: Unauthorized WAN card is plugged in - Power off and remove the WAN card.

Action: The WAN card is not supported on this computer. Remove it.

Note: Some computer models do not have a wireless WAN.

Bluetooth problem

Symptom: 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 the Headset profile or AV profile.

Action: Do the following:

1. Exit the application that uses the sound device (for example, Windows Media Player).

2. Open Control Panel.

3. Click Hardware and Sound ➙ Sound.

4. Select the Playback tab.

5. If you are using the Headset profile, select Bluetooth Hands-free Audio and click the Set Default

button. If you are using the AV profile, select Stereo Audio and click the Set Default button.

6. Click OK to close the Sound window.