I found this at HP's support pages.
Recovering from Windows XP
Use the following steps to recover the computer from the Windows XP desktop:
Backup files from the My Documents folder and from other folders you may have created.
Disconnect all connected devices (such as the Personal Media Drive, USB drives, printer, and fax), remove media from drives, and remove any recently added internal hardware. Do not disconnect the monitor, keyboard, mouse, and power cord.
From the Windows XP desktop, click Start , All Programs , and then one of the following options:
NOTE: The following options are for HP computers. Compaq computers will have similar options (for example, Compaq Tools)
. HP is a little vague on their instructions here, you will have to find choices which are close to the ones shown.
Edited by dc3
HP Tools , and then HP PC System Recovery .
Hewlett-Packard , hp pavilion pc tools , and hp pc system recovery .
PC Help & Tools , and then HP PC System Recovery .
A recovery Welcome screen appears.
Click Yes or OK to continue the recovery process.
The computer restarts to the recovery program. If another welcome screen is displayed, click OK to continue.
Select one of the following procedures, depending on which recovery type you want to perform:
To perform a system recovery, click Next , and then click Yes
To perform a destructive recovery, click Advanced , (select Destructive Recovery ) and then click Next .
CAUTION: A destructive recovery will format the hard drive. This will delete all the information on the hard drive and reinstall Windows XP and the original software that came with the computer.
Read and respond to each window and screen that appears.
After the System Recovery is complete, the computer restarts and continues into Windows setup. Complete the setup screens and wait until the PC finishes the setup.
NOTE: It may take a long time to complete Windows setup. This time varies and may take over several hours. Recovery times are most affected by using recovery discs that were ordered from HP and/or the amount of files that were stored in the user account folders (for example, My Documents and the Desktop).
Before using your computer, update and protect your computer. For more information, refer to Things To Do After Performing a System Recovery in Windows XP .
9. Re-install applications that you added after puchasing the computer, and any files that you have backed up.http://h10025.www1.hp.com/ewfrf/wc/documen...;product=296682
Edited by dc3, 20 February 2009 - 02:14 AM.