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Removing and Replacing the Back Cover in HP Omni 120-1000 Series Desktop PCs

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This document applies to HP Omni 120-1000 series desktop computers.
HP Omni 120-1000 series desktop computer
HP Omni 120-1000 series desktop computer

Before you begin

  • Remove any CD or DVDs from the computer.
  • Turn off the computer, and disconnect all cables. Be sure to disconnect the network cable before disconnecting the power cord.
  • Transfer the computer to a clear, flat, stable work surface over a noncarpeted floor. Place the computer face-down on a soft flat surface. HP recommends that you place the computer on a blanket, towel, or other soft cloth to protect the touch screen surface from scratches or other damage.
  • Do not remove a component from the protective packaging until you are ready to install it.
WARNING:Make sure the computer is disconnected from power before starting.
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.

Video overview

View the following video before using the steps in this article.
NOTE:For best quality on dial-up connections, wait until the video has fully loaded before viewing.

Removing the rear cover

To access many system components, remove the rear cover.
Use the following steps to remove the rear cover:
Step 1

Place the unit face down on a table.
Placing the unit face down
Step 2

Loosen each of the two captive screws for the rear cover...
Loosening the screws
...until you can hear the screw make a clicking sound five times. Loosening until the screw clicks five times
Step 3

Press in on the latch at the bottom of the rear cover.
Pressing in on the latch
Step 4

Pull the rear cover off from the computer.
Removing the cover

Replacing the rear cover

Use the following steps to replace the rear cover:
Step 1

The rear cover has several tabs along the outer edge that fit under the outer lip of the front bezel.
Finding the tabs on the cover
Step 2

To replace the rear cover, align the cover onto the computer.
Replacing the back cover
Step 3

Press the rear cover firmly until all tabs have snapped into place.
Pressing down on the cover
NOTE:The bottom edge will not be flush against the front bezel.
Pressing down on the cover
Step 4

Tighten the two captured screws on the rear cover until the bottom edges of the rear cover are flush against the edge of the outer ring of the bezel.
Tightening the screws

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