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HP Pavilion All-in-One 23-1000 Desktop PCs - Replacing the Motherboard

This document applies to HP Pavilion All-in-One 23-1000 desktop computers.
HP Pavilion All-in-One 23-1000 desktop computer
Before you begin
  • Have a Phillips head screw driver ready.
  • Turn off the computer, disconnect the Ethernet or modem cable, and disconnect the power cord.
  • Transfer the computer to a clean, flat, stable work surface over a noncarpeted floor. HP recommends that you put down a blanket, towel, or other soft cloth to protect the screen from scratches or other damage.
  • Use an antistatic wrist strap and a conductive foam pad when working on the computer. Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards and other components. HP strongly recommends the use of the wrist strap and conductive foam pads to reduce the risk of damage to your computer.
  • Remove a component from its protective packaging only when you are ready to install it.
  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 motherboard
Use the following steps to remove the motherboard:
Step 1
To remove the motherboard, you must first remove the rear cover, the motherboard EMI shield, the wireless LAN card, the system memory, the CPU thermal module, and the CPU if the CPU is removable.
For instructions to remove the rear cover, see the HP support document, Removing and Replacing the Rear Cover.
Removing the rear cover
Step 2
To remove the EMI shield, remove the two screws securing the motherboard EMI shield to the computer.
The two screws to remove the EMI shield
Step 3
Carefully tilt up the side of the shield and pull it off the computer.
Tilting and lifting the motherboard shield
Step 4
To remove the wireless LAN card, detach the connectors from the wireless LAN card.
Detaching the connectors from the card
Step 5
Remove the two screws that secure the card. The card will pop up to about a 45 degree angle.
Finding the two screws to remove
Step 6
Grasp the card and pull it out.
Grasping and removing the card
Step 7
To remove the memory modules, gently pull out on the levers on each side of the memory modules. The memory modules pop up.
Pulling out the levers and the memory pops up
Step 8
Grasp the edges of the memory module and remove it.
Removing the memory
Step 9
To remove the CPU thermal module, loosen the four screws that secure the CPU thermal module.
Loosening the four screws that secure the thermal module
Step 10
Remove the screw at the radiator end of the thermal module.
Removing the screw at the radiator end of the thermal module
Step 11
Carefully lift the CPU thermal module off of the motherboard.
Lifting the thermal module
Step 12
Remove the CPU if it is removable. If it is, it is either an Intel or AMD CPU.
To remove an Intel CPU
Press down to release the CPU load lever from its retention tab...
Releasing the load lever from the retention tab
...and pull it back.
Pulling the load lever back
Install a socket cover over the load plate window before removing the CPU.
Installing a socket cover for the Intel CPU socket cover assembly
Lift the CPU and remove it from its socket. Replace the load plate over the socket.
Lifting up the CPU to remove it
To remove an AMD CPU
Swing up the CPU load lever...
Swinging up the load lever to release the CPU
...and then lift and remove the CPU from the socket.
Removing the CPU from the socket
Step 13
To remove the motherboard, detach all system connectors and remove the nine screws that secure the motherboard to the frame.
Removing the nine screws and connectors
Step 14
Lift the motherboard off the frame.
Removing the motherboard from the frame
Step 15
Put the motherboard in a protective, antistatic bag.
Storing the motherboard in an antistatic bag
Replacing the motherboard
Use these steps to replace the motherboard:
Step 1
To reinstall the motherboard, align the screw holes on the motherboard with the standoffs on the computer. Clear any connectors away from the sides of the motherboard.
Replacing the motherboard
Step 2
Replace the nine screws that secure the motherboard to the computer and reattach all the connectors.
Replacing the nine screws that secure the motherboard
Step 3
For instructions to replace the CPU, see the HP support document, Replacing the CPU.
Replacing the CPU
Step 4
For instructions to replace the memory, see the HP support document, Adding or Replacing Memory.
Replacing the memory
Step 5
To replace the wireless LAN mini-card, angle the card into its slot at a 45 degree angle and press down.
Reinstalling the wireless LAN card
Step 6
Replace both screws. Hold the card down while replacing the first of the two screws.
Holding the card and replacing the screw
Step 7
Reattach the connectors to the card.
Replacing the two connector wires
Step 8
To replace the CPU thermal module, first clean the thermal solution from the CPU by applying a cleaning agent and then wiping it clean.
Applying the cleaning solution
Wiping the CPU clean
Step 9
Repeat the cleaning procedure on the thermal module.
Applying the cleaning solution
Wiping the thermal module clean
Step 10
Apply new thermal grease or thermal pad to the CPU.
Applying the thermal grease
Spreading the  thermal grease
Step 11
Carefully align the CPU thermal module back onto the computer.
Replacing the thermal module
Step 12
Tighten the screws to secure the CPU thermal module.
Tightening the thermal module screws
Step 13
Replace the screw near the radiator.
Replacing the screw near the radiator
Step 14
To replace the motherboard EMI shield, find the four tabs on the edge of the EMI shield...
Finding the four tabs on the motherboard shield
...and then find the four slots on the computer frame.
Finding the four slots on the computer frame
Step 15
Insert the tabs on the shield into the slots on the frame and carefully swing the shield down and press it into place.
Inserting the tabs in the slots and lowering the shield into place
Step 16
Replace the two screws that secure the motherboard shield to the frame.
Replacing the screws
Step 17
Replace the rear cover.
For instructions to replace the rear cover, see the HP support document, Removing and Replacing the Rear Cover.
Replacing the rear cover

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