HP Pavilion dv9420ca Notebook PC support
Notebook PC Does not Automatically Connect to WLAN if Undocked while in Standby Mode
Understanding the problem
The notebook PC does not automatically connect to a Wireless Local Area Network (WLAN) if the notebook PC went into standby mode while docked and was undocked while in standby mode. The WLAN/LAN is enabled. The notebook PC detects the wireless network but does not automatically connect.
This issue occurs in some models of notebooks when docking and undocking in different power states due to outdated wireless drivers. To resolve the problem, follow the steps below.
Download and install updated drivers
To resolve this issue in Windows XP, download and install Intel PRO Wireless Driver and/or Intel PROSet Wireless Network Connection, version 7.10 revision D (SP38891 or later) from the HP Drivers and Downloads page.
To resolve this issue in Windows Vista, download and install Intel PRO/Wireless Drivers for Microsoft Vista, VERSION: 7.10 REV: D (SP38888 or later) from the HP Drivers and Downloads page.
Download directly from FTP.HP.COM: SP38891 File Download
Download directly from FTP.HP.COM: SP38891 Instructions/Information
Download directly from FTP.HP.COM: SP38888 File Download
Download directly from FTP.HP.COM: SP38888 Instructions/Information