If the words “Bluetooth Radio” appear in the device listing, the Microsoft Bluetooth software is installed on your computer. If you want to use ThinkPad Bluetooth with Enhanced Data Rate Software, you have to install it and then replace the Bluetooth driver. For more information, see “Using Bluetooth” on page 51.

•Problem: While looking at the Classic View of the Control Panel, you see two Bluetooth icons in the Control Panel.

Solution: If you have installed the Microsoft Bluetooth software before, and you are using ThinkPad Bluetooth with Enhanced Data Rate Software, you may find two Bluetooth icons in the Control Panel. One is the Bluetooth Configuration icon for ThinkPad Bluetooth with Enhanced Data Rate Software, and the other is the Bluetooth Devices icon for the Microsoft Bluetooth software.

•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 profile or AV profile.

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.Double-click Sounds and Audio Devices to open the Sounds and Audio Devices Properties window.

4.Select the Audio tab.

5.If you are using Headset profile, select Bluetooth Audio for both Sound playback and Sound recording. If you are using AV profile, select Bluetooth High Quality Audio for both Sound playback and Sound recording.

6.Click OK to close the Sounds and Audio Devices Properties window.

Keyboard and other pointing devices

The following are the most common keyboard and other pointing devices problems:

UltraNav problems

•Problem: The pointer drifts when the computer is turned on or after it resumes normal operation.

Solution: The pointer might drift when you are not using the TrackPoint during normal operation. This is a normal characteristic of the TrackPoint and is not a defect. Pointer drifting might occur for several seconds under the following conditions:

–When the computer is turned on.

–When the computer resumes normal operation.

–When the TrackPoint is pressed for a long time.

–When the temperature changes.

Problem: The TrackPoint or touch pad does not work.

Solution: Make sure that the TrackPoint or touch pad is set to Enabled in the UltraNav Device Setting.

Note: To open the UltraNav Device Setting, press Fn+F8.

Keyboard problems

•Problem: All or some keys on the keyboard do not work.

Solution: If an external numeric keypad is connected:

1.Turn off the computer.

2.Remove the external numeric keypad.

3.Turn on the computer and try using the keyboard again.

240User Guide

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Lenovo 4242X04, NVS-4200M, 42825BU, 42421A0 manual Keyboard and other pointing devices, UltraNav problems, Keyboard problems
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4242X04, NVS-4200M, 42421A0, 42825BU specifications

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