Restoring software and drivers in Windows XP
HP Pavilion systems with Windows XP do not come with recovery CDs. Do the following steps, in order, to restore a software application or driver in Windows XP:
Click Start, All Programs, HP Tools, and Application Recovery.
In the Recovery window, select either Drivers or Applications as desired and click Next.
Select the software driver or application that is to be reinstalled and click Next.
The driver or application will automatically be reinstalled. Some programs will take longer to install than others.