Alienware X51 Motherboard Replacement

Place the PC so the name "Alienware" is on top and facing you.

Slide the front panel towards you and lift up.

Fully disconnect the panel by unplugging the lighting cord going into the PC's internal system.

Remove the front panel from the rest of the device.

Remove the two 2.0 mm screws holding the fan protector in place using a Phillips #1 screwdriver.

Remove the protector holding the fan in.

Disconnect the Molex KK connector from the fan.

Use a Phillips #1 screwdriver to loosen the four spring screws around the fan until you hear a click.

Gently pull back the clips and remove the fan by pulling it out.

Disconnect the optical-drive data and power cable.

Remove the one 1.0 mm screw using a Phillips #1 screwdriver.

Remove the disc drive from the PC.

Pull apart the clips that hold the RAM sticks in place.

Remove the RAM sticks.

Loosen the four 10.0 mm screws around the heatsink with a Phillips #1 screwdriver until you hear a click.

Remove the heatsink by gently prying and lifting it up.

Remove the single 1.0 mm screw with a Phillips #1 screwdriver.

Firmly remove the internal PC system by lifting it out of the PC.

Loosen the four 1.0 mm screws holding down the motherboard using a Phillips #1 screwdriver.

Disconnect the two SATA plugs going into the motherboard processor.

Disconnect the rectangular power supply plug from the motherboard into the other circuit board.

Disconnect the bundled cable connector going into the motherboard.

Disconnect the white bundled cable connector from the motherboard.

Disconnect the rectangular yellow bundled cable connector plug going into the motherboard.

Disconnect the power supply.

Disconnect the rectangular white bundled cable connector going into the motherboard.

Gently slide and lift out the motherboard from the PC.