el primer problema que tenes es que tenes una Compaq, segundo tenes windows http://h10025.www1.hp.com/ewfrf/wc/fastFaqLiteDocument?lc=en&cc=uk&dlc=en&docname=bph07144 This document pertains to HP and Compaq desktop PCs with Windows XP. Performing a full system recovery takes a long time to perform and involves an incredible amount of data transfer. With so much data to transfer, there are many opportunities for problems to occur. A power outage or a scratch in a recovery disk can cause severe problems. Use this document to resolve full recovery issues in Windows XP. Before using this document, please read the following important information: CAUTION: If extra hard drives were added to the computer, disconnect the IDE and power cables from the back of the extra drive before performing a system recovery. This prevents possible data loss on the additional drive. CAUTION: Performing a full format or destructive recovery completely erases all files, programs, and saved work on the hard drive. Always back up important information before attempting a recovery. NOTE: If PC hardware was added or replaced, remove the hardware to avoid recovery problems. HP PCs that shipped with Windows XP probably do not include recovery discs in the box. The recovery information is stored in a hidden space (partition) on the hard drive. This eliminates the need for Recovery CDs that can get lost or scratched. CAUTION: If Microsoft Windows XP Service Pack 1 (SP1) has been or will be installed, download and install the SP1 software patch (in English) to prevent boot up issues. Disregard if you are using Service Pack 2 for Windows XP. Starting a Recovery Turn on the computer and immediately begin pressing the F10 key repeatedly until a Recovery Screen appears. You can also start a recovery from recovery discs, or from Windows. For more information refer to Performing a Full System Recovery in Windows XP . Recovery is taking too long If your computer stops responding after using the recovery program, do the following: NOTE: If the computer appears to have stopped responding after restarting from a recovery, please wait, it may take several hours or longer to complete the initial Windows XP setup process, especially if a recovery was run from a recovery disc set sent by HP. A Standard recovery may also take longer, depending on how many files are stored in user accounts (like in My Documents ). Exit the stalled recovery process by pressing the POWER button on the PC until the power turns off, this takes approximately five seconds. Before recovering, disconnect personal media drives, printers, scanners, cameras, camera-type memory cards, and other devices that did not originally come with the PC. If you are using recovery discs, be aware of the following items: If you created the recovery discs using Recovery CD Creator, be sure to run the recovery from the same drive that you used to create the discs. Clean the discs with a soft, clean, lint-free cloth wetted with distilled water. Wipe from the center of the disc to the outside edge. You may also use disc cleaning kits or disc restoration kits from your local computer store. These kits produce better results than using cloth and water. You may also use available CD/DVD Drive cleaning kits to clean the laser reading lens of the CD or DVD drive. Try running a full system recovery again from the hard drive by turning the on the computer and pressing the F10 key until a Recovery Screen appears. This performs the recovery from the hard drive. If the recovery stops when recovering from the hard drive, use the section Disc errors occur during the recovery process to eliminate errors on the drive. Try recovering again after the disk errors are removed.