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Introduction

Motherboards are usually the last thing to check if something isn't working, unless you have a specific diagnosis. For this laptop, there are chipsets attached to the motherboard, so if you have a damaged CPU or GPU, you will likely have to replace the whole unit.

Thankfully, this device's construction is not super complicated and you should be able to easily complete this repair. Take extra care to keep each step's screws separated, as there are many different components to remove before you can access the motherboard.

  1. Dell XPS 15 9550 Motherboard Replacement, Back/Underside Panel: step 1, image 1 of 1
    • Turn the laptop upside down.

    • Make sure the laptop is turned off.

    • Use a T5 Torx Screwdriver to remove the ten 3 mm long screws from the perimeter of the back of the laptop.

  2. Dell XPS 15 9550 Motherboard Replacement: step 2, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 2, image 2 of 2
    • Open up the information panel door (on the middle of the back side).

    • While holding the door open, use a Phillips #00 Screwdriver to remove the two 10 mm long screws.

  3. Dell XPS 15 9550 Motherboard Replacement: step 3, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement: step 3, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement: step 3, image 3 of 3
    • Carefully lift the 2 corners of the back panel close to the hinge upwards, to release the whole panel.

    • Do not force the panel off. If it does not come off easily, try to use a plastic spudger where it is stuck.

  4. Dell XPS 15 9550 Motherboard Replacement, RAM: step 4, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement, RAM: step 4, image 2 of 2
    • There are 2 separate RAM sticks.

    • Gently push down on the 2 outside tabs of the RAM stick you want to replace.

    • While still pushing down, gently push the tabs outwards, causing the RAM stick to flip up.

  5. Dell XPS 15 9550 Motherboard Replacement: step 5, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 5, image 2 of 2
    • Firmly grasp the RAM stick from the flipped up edge and gently pull out, to release the RAM stick.

  6. Dell XPS 15 9550 Motherboard Replacement, Wireless Card: step 6, image 1 of 1
    • With a Philips #00 Screwdriver bit, remove one 4 mm long black screw located by the antenna connections on the wireless card.

    • Set the screw and metal holder aside.

  7. Dell XPS 15 9550 Motherboard Replacement: step 7, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 7, image 2 of 2
    • Gently lift up each of the antennas (3) to disconnect them from the wireless card.

    • These are similar to a coat button, the antennas snap on and snap off.

  8. Dell XPS 15 9550 Motherboard Replacement: step 8, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement: step 8, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement: step 8, image 3 of 3
    • With the antennas disconnected, gently pull the wireless card out at the angle it sits at.

    • The wireless card has been successfully removed!

  9. Dell XPS 15 9550 Motherboard Replacement, Cooling Fan(s): step 9, image 1 of 1
    • Use the Small Plastic Spudger to carefully disconnect the white connector from the black port.

  10. Dell XPS 15 9550 Motherboard Replacement: step 10, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement: step 10, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement: step 10, image 3 of 3
    • Use the Phillips #00 Screwdriver to remove the two 4 mm long screws.

    • The location of the 2 screws is different on each fan.

    • The left fan screw locations are circled in red.

    • The right fan screw locations are circled in orange.

  11. Dell XPS 15 9550 Motherboard Replacement: step 11, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 11, image 2 of 2
    • With the screws removed, lift up on the fan and remove it from the laptop.

  12. Dell XPS 15 9550 Motherboard Replacement, Battery: step 12, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement, Battery: step 12, image 2 of 2
    • Use a Philips #00 Screwdriver to remove the seven 3 mm long screws from the perimeter of the battery.

    • Each screw is labeled "M2X4" with an arrow pointing to the screw.

  13. Dell XPS 15 9550 Motherboard Replacement: step 13, image 1 of 1
    • Gently lift up on the backside of the battery.

  14. Dell XPS 15 9550 Motherboard Replacement: step 14, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement: step 14, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement: step 14, image 3 of 3
    • Firmly grasp the black connector on both sides.

    • Carefully pull the connector towards the battery, to release the connector and the battery from the laptop.

  15. Dell XPS 15 9550 Motherboard Replacement, Motherboard: step 15, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement, Motherboard: step 15, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement, Motherboard: step 15, image 3 of 3
    • The touchpad has two ZIF connectors at the bottom of the motherboard. Use a flat plastic tool to lift the tabs (see picture 2) and gently pull the ribbon cables free.

    • When re-assembling, make sure the connectors are set straight and square before closing the tabs.

  16. Dell XPS 15 9550 Motherboard Replacement: step 16, image 1 of 1
    • Pull this Monitor connector out by its plastic edges

  17. Dell XPS 15 9550 Motherboard Replacement: step 17, image 1 of 3 Dell XPS 15 9550 Motherboard Replacement: step 17, image 2 of 3 Dell XPS 15 9550 Motherboard Replacement: step 17, image 3 of 3
    • Remove the single Phillips screw to take off this plate and reveal the connector underneath.

    • Pull up the black strap with the plastic spudger, and use your fingers to gently but firmly pull straight up.

  18. Dell XPS 15 9550 Motherboard Replacement: step 18, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 18, image 2 of 2
    • Pull up on the plastic edges to remove the indicated connector at the bottom right of the motherboard.

  19. Dell XPS 15 9550 Motherboard Replacement: step 19, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 19, image 2 of 2
    • This connector in the top left might be taped in two places. Simply pull up to loosen the tape, and use the plastic edges of the connector to pull it out. Have some tape on hand for reassembly, as the tape might have lost its adhesive backing.

  20. Dell XPS 15 9550 Motherboard Replacement: step 20, image 1 of 2 Dell XPS 15 9550 Motherboard Replacement: step 20, image 2 of 2
    • With all mounted components removed, unscrew the motherboard Phillips-head screws.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Cameron Picht

Member since: 03/31/2022

133 Reputation

1 Guide authored

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IUPUI, Team 2-4, Harley Spring 2022 Member of IUPUI, Team 2-4, Harley Spring 2022

IUPUI-HARLEY-S22S2G4

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