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Replacing the Hard Drive

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This document pertains to certain HP Pavilion Desktop PCs sold prior to 2000 with the following type of case.
This document explains how to replace an internal hard drive in certain Pavilion Desktop PC.
WARNING:The edges of metal panels can cut skin. Be careful not to slide skin along any interior metal edge of the computer.
CAUTION:This product contains components that can be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a noncarpeted floor, use a static dissipative work surface (such as a conductive foam pad), and wear an ESD wrist strap connected to a grounded surface.

Required equipment

To perform this procedure, you will need:
  • A Phillips screwdriver
  • The replacement hard drive
  • The Certificate of Authenticity number from the Microsoft Windows guide included with your PC (if you are going to recover the PC software to the original software configuration).
  • Make sure you have adequate lighting that allows you to see inside the computer. A flashlight may be helpful.
  • Antistatic wrist grounding strap
    CAUTION:If possible, back up all important files before performing the steps in this document.

Disconnecting your computer

  1. Turn off the computer.
  2. Turn off all connected devices.
  3. Disconnect all cables.

Removing the side panels

  1. Set the computer on a table or desk at a comfortable working height.
  2. Working from the back of the computer, remove the screws that hold the side panels in place.
    Set the screws aside.
    Figure 1: Example of panel retainment screws
  3. Slide the side panels back to remove them.

Removing the drive cage

Before you can remove the hard drive, the drive cage must removed through the front of the computer. To remove the drive cage, complete the following steps:
  1. Remove the screws that hold the drive cage in place. As seen when viewing the computer from the back, there are two screws on the right side. Remove these screws and set them aside.
    NOTE: Newer models may have only one screw, which is located at the bottom-front of the drive cage.
  2. Once the screws have been removed, pull out on the metal latch and firmly push the drive cage forward from the back.
    Figure 2: Removing drive cage
    1 - Attachement screw
    2 - Attachement screw
  3. Slide the drive cage forward partially through the front of the computer.
  4. Disconnect all cables from the back of each device that is installed in the drive cage. If needed, label each cable to help you reconnect the cables to the devices later.
  5. Once all of the cables are disconnected, slide the drive cage out through the front of the computer and place it on a flat surface.

Removing and replacing the hard drive

  1. Note the position of the hard drive in the drive cage so you can install the new hard drive properly.
  2. Remove the screws that hold the hard drive in place. There are two on one side and may be one or two screws on the other.
    Figure 3: Possible hard drive screw locations
  3. Slide the hard drive out through the rear of the drive cage.
  4. Slide the new drive into the drive cage from the rear.
  5. Replace the screws you removed in Step 2.

Reassembling the computer

  1. Slide the drive cage back into the computer, leaving enough room so to reach behind the hard drive to reconnect the cables.
  2. Reconnect the cables to the devices that are installed in the drive cage. Make sure that ribbon cables are fully seated without bending any pins inside the connectors.
  3. Slide the drive cage fully into the computer.
  4. Replace the screws that attach the drive cage to the computer.
  5. Replace the left and right side panels by aligning the top slots of the panel and sliding them back into place.
  6. Replace the side panel screws
  7. Reconnect all attached devices and turn on the computer.

Completing the installation

Recovery the PC using the recovery discs that came with the PC or install a new operating System (not discussed here).