Windows Vista/HP Pavilion dv9000: Fixing Y! Messenger's Webcam Not Connected Error ~ Creation Zone

If the built-in webcam of HP Pavilion dv9000 is not functioning properly on Windows Vista with Yahoo! Messenger, one of the following steps may help fix the issue (Courtesy: HP Customer Support).

Step #1:

Unistall HP Pavilion Webcam software.
Start -> Settings -> Control Panel -> Programs -> Uninstall a program.
Uninstall the Webcam driver from the Device Manager as follows:
Start -> Settings -> Control Panel -> Device Manager -> Imaging devices -> HP Webcam -> Disable(by right clicking HP Webcam).
Restart the computer. Upon the restart, Vista will automatically load webcam driver.

If the issue persists even after these steps or if there is no entry found in "Device Manager", then download and install the updated webcam driver from the following link:

ftp://ftp.hp.com/pub/softpaq/sp34501-35000/sp34746.exe

Step #2 (Recommended):

Download and install Soft Paq.s from the link given below. This package installs Microsoft fixes and enhancements for the Microsoft Windows Vista Operating System, as well as providing other fixes and enhancements.

ftp://ftp.hp.com/pub/softpaq/sp37501-38000/sp37736.exe
Restart the system once the installation is done.

If the issue persists, install the following update from Microsoft.

http://support.microsoft.com/kb/941600
Restart the system once the installation is done.
If the issue persists, follow the below steps to isolate the issue.

Start -> Settings -> Control Panel -> Programs and Features

In 'Programs and Features' window, look for an item called 'Tasks'. Under 'Tasks' find 'View installed updates'. Search for KB915597; if found, select it, and finally select 'Uninstall'. If prompted for the administrator password or confirmation, type the password or confirm.
If the issue remains, download and install the software SP35414 from the following link:

ftp://ftp.hp.com/pub/softpaq/sp35001-35500/sp35414.exe

Installing this software helps to Preview, Capture, Take a Snap options on the built in webcam.
Even if the above step fails, try:

Start -> Settings -> Control Panel -> Administrative Tools -> Services -> Windows Image Acquisition (WIA)

Right click on Windows Image Acquisition (WIA) and select properties. In General tab, change the start type to Automatic and press the start button. Again right click on 'Windows Image Acquisition (WIA)' and select properties. In Recovery tab set First failure, Second failure and Subsequent failure option to Restart the service. Apply the changes and restart the system.
If none of the above steps resolve the issue, contact HP's customer support.