Notebook PC Battery Discharge Time May Be Shorter Than Expected in Windows Vista

Notebook PC Battery Discharge Time May Be Shorter Than Expected in Windows Vista
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In this document:
Understanding Bluetooth issues in Windows Vista
Download and Install Windows Updates
Re-enable Selective Suspend
This document pertains to HP Notebook PCs with Windows Vista.
Understanding Bluetooth issues in Windows Vista
An issue with Microsoft Windows Vista Bluetooth implementation could cause Bluetooth malfunction and/or system instability (hang/blue screen). In order to resolve the issue the Bluetooth "Selective Suspend" option in the driver was disabled. The disabling of selective suspend may cause a loss of up to 30 min of battery life.
Follow the steps below to download patches and re-enable Selective Suspend to improve battery life.

Download and Install Windows Updates
To resolve this issue, download and install QFE 929577 from Windows Update and then re-enable selective suspend in the Bluetooth driver to improve battery life.
Perform the following steps to find and install updated software and hardware drivers for your PC with Windows Vista:

Create a system restore point to back up your system before starting. If you do not know how to create a system restore point, see Related links for more information.
If you are not already connected to the Internet, connect now.
Click Start, and type Windows Update in the Search field. Select Windows Update as soon as it becomes available.
In the Windows Update page, click Check for updates in the left pane.
When the required update appears, select it and click on Install updates button. Some updates may require you to restart your computer.

Re-enable Selective Suspend
To re-enable Selective Suspend, perform the following:

Click Start, type Device Manager in the search field and press Enter.
Select Device Manager.
Click the + sign next to Bluetooth Radios.
Double click HP Integrated Bluetooth module.
On the Power Management tab, click the box next to Allow the computer to turn off this device to save power.
Click OK.
Close Device Manager.