Removing & Replacing Parts
HP Pavilion Gaming 790-xxx PC Series
How to Replace the Access Panel
Removal
Press the release latch and slide the access panel back until it stops.
Lift the access panel up off the chassis and remove.
Replacement
Lower the access panel into place,
ensuring that the tabs on the access panel
are aligned with the channels in the chassis.
Slide the access panel forward until it snaps into place.
How to Replace the System Fan
Before you begin:
Remove the access panel.
Removal
Disconnect the fan cable from the system board.
While supporting the fan, remove the two Phillips-head screws
securing the fan to the chassis.
Lift and remove the fan.
Replacement
Position the fan against the chassis and align the screw holes.
While supporting the fan, replace the two Phillips-head screws
securing the fan to the chassis.
Reconnect the fan cable to the system board.
How to Replace the Expansion Cards
Before you begin:
Remove the access panel.
Removal
If they are present, remove the two Torx T15 screws
securing the slot clover retention latch closed.
Rotate the slot cover retention latch open.
Grasp the expansion card and lift it out of the socket.
Replacement
Lower the expansion card into position on the chassis.
Rotate the slot cover retention latch closed.
If removed earlier, replace the two Torx T15 screws
securing the slot clover retention latch closed.
How to Replace the Graphics Card
Before you begin:
Remove the access panel.
Removal
If they are present, remove the two Torx T15 screws
securing the slot clover retention latch closed.
Rotate the slot cover retention latch open.
While pressing the release tab,
grasp the graphics card firmly and lift it off of the system board.
Replacement
Lower the graphics card into position on the system board.
Press the release tab
and push firmly until the graphics card is fully seated.
Rotate the slot cover retention latch closed.
If removed earlier, replace the two Torx T15 screws
securing the slot clover retention latch closed.
How to Replace the Optical Drive
Before you begin:
Remove the access panel.
Removal
Remove the two Torx T15 screws
securing the cables to the optical drive and I/O frame.
Disconnect the cables from the optical drive.
Press on the drive release latch at the rear of the drive
and slide the drive out the front of the unit.
NOTE:
If you are installing a new optical drive,
remove the drive release latch from the optical drive
and set it aside for later replacement.
Replacement
NOTE:
If you are installing a new optical drive,
attach the drive release latch by aligning the pins
with the holes in the drive
and pressing firmly until the latch snaps into place.
Slide the drive into the bay until it locks in place.
Reconnect the cables to the drive.
Replace the two Torx T15 screws
securing the cables to the optical drive and I/O frame.
How to Replace the Heat Sink
Before you begin:
Remove the access panel.
Removal
Disconnect the processor fan cable from the system board.
Loosen the four captive Torx T15 screws
in a diagonal pattern
to release the heat sink from the system board.
Lift and remove the heat sink.
NOTE:
If you are reusing the processor or heat sink,
remove the thermal grease with an alcohol swab.
Replacement
Apply thermal grease in a pattern of five big dots on the processor.
Position the heat sink over the processor
and align the four retaining screws with the mounting holes.
Tighten the four captive Torx T15 screws in a diagonal pattern.
Reconnect the processor fan cable.
How to Replace the CPU
Before you begin:
Remove the access panel and heat sink.
Removal
Push down and out on the load lever
and allow it to rise to the spring tension position.
Lift the load plate until it is fully open.
IMPORTANT:
Before removing the processor,
take special note of the gold triangle on one corner
and the notches on two sides of the processor.
The processor must be installed in the same position
in which it was removed or it may be destroyed.
Using an Intel CPU removal/replacement tool,
remove the processor.
IMPORTANT:
Use of an Intel CPU removal/replacement tool
is recommended for all regions
and required in some regions.
Replacement
CAUTION:
The pins on the system board are very fragile
and easily damaged.
To avoid damage to the system board,
do not touch the processor or the processor socket contacts.
Using an Intel CPU removal/replacement tool,
replace the processor.
Lower the load plate over the processor socket.
Lower the load lever and place it securely into its latch.
How to Replace the Front Bezel
Before you begin:
Remove the access panel and optical drive.
Removal
Pull up on the three tabs on the front bezel
and rotate the bezel away from the chassis.
Disconnect the power button cable.
Remove the front bezel.
NOTE:
If installing a new front bezel,
remove the power button board from the old bezel
and set it aside for later replacement.
Replacement
NOTE:
If installing a new front bezel,
be sure to install the power button board previously set aside.
Reconnect the power button cable.
Align the hooked tabs on the front bezel with the slots in the chassis.
Rotate the bezel up against the chassis
and press firmly until the tabs snap into place.
How to Replace the Power Button Board
Before you begin:
Remove the access panel, optical drive, and front bezel.
Removal
Remove the two Philips-head screws
that secure the power button board to the front bezel.
Lift the power button board off the front bezel.
Replacement
Align the power button board with the screw holes on the front bezel
and lower the board into place.
Replace the two Philips-head screws
that secure the power button board to the front bezel.
Reconnect the power button board cable.
How to Replace the Storage Drive Tray
Before you begin:
Remove the access panel, optical drive, and front bezel.
Removal
Remove the two Torx T15 screws
securing the storage drive tray to the front of the chassis.
Rotate the storage drive tray out
and away from the chassis until it stops.
Disconnect the cables running through the storage drive tray
from the system board.
While supporting the storage drive tray,
remove the four Torx T15 screws
securing the frame to the chassis.
Remove the storage drive tray.
NOTE:
If you are installing a new storage drive tray,
remove the following from the old frame
and install onto the new frame:
Hard drive
Hard drive cables
Optical drive cables
Replacement
Lower the storage drive tray into place and align the screw holes.
While supporting the storage drive tray,
replace the four Torx T15 screws
securing the frame to the chassis.
Reconnect the cables to the system board.
Rotate the storage drive tray down,
ensuring the guide pins are aligned with the slots on the chassis.
Replace the two Torx T15 screws
securing the storage drive tray to the front of the chassis.
How to Replace the Hard Drive
Before you begin:
Remove the access panel, optical drive, front bezel,
and rotate open or remove the storage drive tray.
Removal
IMPORTANT:
In some units the heat sink or graphics card
can block access to the hard drive.
Because of this it is recommended to rotate the drive cage out.
Disconnect the cables from the hard drive.
Press the hard drive release latch.
Firmly grasp the hard drive
and remove the hard drive from the tray.
Replacement
Align the guide pins on the hard drive
with the channels in the storage drive tray.
Push the hard drive all the way into the storage drive tray
until it snaps into place.
Reconnect the cables to the hard drive.
How to Replace the Memory Module(s)
Before you begin:
Remove the access panel, optical drive, front bezel,
and rotate open or remove the storage drive tray.
Removal
Push down and out on the memory module slot latches
to release the memory module.
Remove the memory module from the slot.
Replacement
Ensure the memory module slot latches are open.
Align the notch in the memory module
with the memory module slot key.
Push the memory module down firmly into the slot
until the latches snap into place and the module is fully seated.
How to Replace the Wireless LAN Module
Before you begin:
Remove the access panel, optical drive, front bezel,
and rotate open or remove the storage drive tray.
Removal
CAUTION:
Use care when disconnecting the
wireless LAN antenna cables from the wireless LAN module.
A damaged cable or connector can degrade performance.
Disconnect the antenna cables from the wireless LAN module
with a pair of small needle-nose pliers or tweezers.
Remove the Phillips-head screw
that secures the card to the system board
and allow it to release to the spring-tension position.
Grasp the card by the edges and pull gently to remove it.
Replacement
Match the notch on the card with the key in the socket
and gently push the card into place.
Press the card down and replace the Phillips-head screw
that secures the card to the system board.
Reconnect the antenna cables
to the connector on the wireless LAN module.
CAUTION:
Use care when connecting the
wireless LAN antenna cables to the wireless LAN module.
A damaged cable or connector
can degrade performance.
NOTE:
If the system has two antennas installed,
the antenna labeled "2"
should be connected to the port marked "2" on the board
and the antenna marked "1"
should be connected to the port marked "1" on the board.
How to Replace the Power Supply
Before you begin:
Remove the access panel, optical drive, front bezel,
and rotate open or remove the storage drive tray.
Removal
Disconnect the main power cables from the system board.
Remove the cables from the cable guides on the chassis
and system board.
Remove the three Torx T15 screws
securing the power supply to the chassis.
Press the release tab and slide the power supply back
away from the chassis.
Lift the power supply out of the chassis.
Replacement
Lower the power supply into the chassis and slide it into place.
Replace the three Torx T15 screws
that secure the power supply to the back of the chassis.
Route the main power cables
into the cable guides on the chassis and system board.
Reconnect the power cables to the system board.
How to Replace the Wireless LAN Antenna
Before you begin:
Remove the access panel, optical drive, front bezel,
and rotate open or remove the storage drive tray.
Removal
CAUTION:
Use care when disconnecting the wireless LAN antenna cables
from the wireless LAN module.
A damaged cable or connector can degrade performance.
Disconnect the antenna cables from the wireless LAN module
with a pair of small needle-nose pliers or tweezers.
Unroute the cable from the cable guides.
Squeeze the antenna cover and rotate it away from the chassis.
Carefully pull the adhesive backed antenna away
from the chassis and remove.
Replacement
Guide the antenna cable into the hole in the chassis.
Slide the tab on the antenna into the cutout and rotate it
against the chassis.
Press firmly to secure the adhesive backed antenna onto the chassis.
Align the antenna cover tabs with the holes in the chassis
and push the cover in until it snaps into place.
Route the cable into the cable guides.
Reconnect the antenna cables
to the connector on the wireless LAN module.
CAUTION:
Use care when connecting the
wireless LAN antenna cables to the wireless LAN module.
A damaged cable or connector
can degrade performance.
NOTE:
If the system has two antennas installed,
the antenna labeled "2"
should be connected to the port marked "2" on the board
and the antenna marked "1"
should be connected to the port marked "1" on the board.
How to Replace the CMOS Battery
Before you begin:
Remove the access panel, optical drive, front bezel,
rotate open or remove the storage drive tray,
and any graphics or expansion cards
blocking access to the battery.
Removal
Using a flat-bladed tool, disengage the battery from the socket.
Grasp the system battery and lift it out of the socket.
Replacement
Ensuring the plus (+) sign is facing up,
press the battery into the socket.
How to Replace the System Board
Before you begin:
Remove the access panel, optical drive, front bezel,
rotate open or remove the storage drive tray,
and any graphics or expansion cards.
Removal
CAUTION:
Use care when disconnecting the
wireless LAN antenna cables from the wireless LAN module.
A damaged cable or connector can degrade performance.
Disconnect the antenna cables from the wireless LAN module
with a pair of small needle-nose pliers or tweezers.
Disconnect all cables from the system board,
noting their location for reinstallation.
Remove the cables from the clip on the system board.
Remove the 12 Torx T15 screws
that secure the system board to the chassis.
Tilt the system board and lift it out of the chassis.
NOTE:
Before installing a system board,
remove the following from the old system board
and install on the new system board:
Heat sink
Processor
Memory module
Wireless module
Solid state drive
Battery
Replacement
Lower the system board into the chassis.
Position the board against the rear I/O panel
and align the screw holes.
Replace the 12 Torx T15 screws
that secure the system board to the chassis.
Reconnect all cables from the system board,
noting their location for reinstallation.
Replace the cables into the clip on the system board.
Reconnect the antenna cables
to the connector on the wireless LAN module.
CAUTION:
Use care when connecting the
wireless LAN antenna cables to the wireless LAN module.
A damaged cable or connector
can degrade performance.
NOTE:
If the system has two antennas installed,
the antenna labeled "2"
should be connected to the port marked "2" on the board
and the antenna marked "1"
should be connected to the port marked "1" on the board.
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