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ASUS VivoBook S400C Motherboard Replacement

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  1. ASUS VivoBook S400C Motherboard Replacement, Remove the Bottom Cover: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.

  2. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use a spudger or your fingers to go around and lift the edges and release the back panel.

  3. ASUS VivoBook S400C Motherboard Replacement, Disconnect the Battery: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Using a spudger, lift up the plug connecting the battery to the motherboard.

  4. ASUS VivoBook S400C Motherboard Replacement, Battery: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • With a Phillips #0 screwdriver, remove the four 5.7 mm screws holding the battery to the laptop.

  5. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Carefully lift the battery up and out of the device.

  6. ASUS VivoBook S400C Motherboard Replacement, Hard Drive: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Remove the three Phillips #0 screws holding the the hard drive in place:

    • Two 3.8 mm screws.

    • One 5.7 mm screw.

  7. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Pull left and lift out the hard drive.

  8. ASUS VivoBook S400C Motherboard Replacement, Heat Shield: crwdns2935265:08crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Heat Shield: crwdns2935265:08crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Remove the black shield covering the display connector and the heat sink.

    • You may need to use double-sided adhesive tape to resecure the shield.

  9. ASUS VivoBook S400C Motherboard Replacement, Display Assembly: crwdns2935265:09crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Remove the black tape securing the keyboard ribbon cable to the display connector.

    • Fold the ribbon cable the opposite way, resecuring it to the hard drive to keep it out of the way.

  10. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:010crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:010crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Peel off the clear tape from the motherboard display connector.

  11. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:011crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Position spudgers on the white tabs on either side of the connector and push evenly to unplug the display.

  12. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:012crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:012crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:012crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Peel off the three pieces of black tape securing the display cable to the motherboard.

    • Deroute the cable from the channel it sits in.

    • Move the cable to the side, out of the way.

  13. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:013crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:013crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:013crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Use a spudger to release the cables from the wifi card.

  14. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:014crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:014crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:014crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Lift the tapes securing the wires to the motherboard.

    • Move the wires to the side out of the way.

  15. ASUS VivoBook S400C Motherboard Replacement, Disconnect the Hinges: crwdns2935265:015crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the Hinges: crwdns2935265:015crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Remove the two screws securing the hinge on the left.

    • Pry the hinge up by hand to a 90 degree angle.

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    • Remove the two screws securing the hinge on the right.

    • Pry the hinge up by hand to a 90 degree angle.

  17. ASUS VivoBook S400C Motherboard Replacement, Remove the Display: crwdns2935265:017crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Remove the Display: crwdns2935265:017crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Remove the Display: crwdns2935265:017crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Lift the base of the laptop from the front.

    • Raise it to a 90 degree angle.

    • Slide it forward slightly to clear the hinges.

    • The display is now free.

  18. ASUS VivoBook S400C Motherboard Replacement, Wifi Card: crwdns2935265:018crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Wifi Card: crwdns2935265:018crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use a spudger to release the cables from the wifi card.

  19. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:019crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Remove the singular 3.8 mm screw with a Phillips #0 screwdriver.

  20. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:020crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Pull the wifi card up and out.

  21. ASUS VivoBook S400C Motherboard Replacement, RAM: crwdns2935265:021crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, RAM: crwdns2935265:021crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, RAM: crwdns2935265:021crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Hook a thumbnail in each of the metal retainers on either side of the RAM module and spread them apart slightly.

    • The RAM module will pop up at an angle.

  22. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:022crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:022crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:022crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Slide the RAM out in a straight line to remove it.

    • When replacing the RAM, insert it at the same angle and be sure to slide it fully into the slot before snapping it down. The latches on the sides should fit exactly into the cutouts on the side of the memory module.

  23. ASUS VivoBook S400C Motherboard Replacement, SSD Card: crwdns2935265:023crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, SSD Card: crwdns2935265:023crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, SSD Card: crwdns2935265:023crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Disconnect the I/O Board ribbon cable from the motherboard.

    • Flip up the retaining latch with a spudger.

  24. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:024crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:024crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Grasp the ribbon cable by the blue tab and pull it straight out from the connector.

  25. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:025crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:025crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:025crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Disconnect the I/O Board ribbon cable from the I/O board.

    • Flip up the latch with a spudger.

  26. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:026crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:026crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:026crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Grasp the ribbon cable by the blue tab and pull it straight out from the connector.

    • Remove the ribbon cable to expose the SSD device.

  27. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:027crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • If present, remove any insulating sheet covering the SSD.

    • Remove the single retaining screw.

  28. ASUS VivoBook S400C Motherboard Replacement, Unplug the SSD from the motherboard: crwdns2935265:028crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Unplug the SSD from the motherboard: crwdns2935265:028crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Grasp the SSD by the sides and slide it out of the connector.

  29. ASUS VivoBook S400C Motherboard Replacement, CPU Fan / Heat Sink Assembly: crwdns2935265:029crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, CPU Fan / Heat Sink Assembly: crwdns2935265:029crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, CPU Fan / Heat Sink Assembly: crwdns2935265:029crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Unplug the fan.

    • Grasp the plug with a fingernail on either side and pull it straight out from the connector.

  30. ASUS VivoBook S400C Motherboard Replacement, Remove the Fan and Heatsink Screws: crwdns2935265:030crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Remove the two 5 mm screws securing the fan.

    • Remove the four 3 mm screws securing the heat sink.

    • Removing the screw covered by the warning label will void your warranty.

  31. ASUS VivoBook S400C Motherboard Replacement, Remove the Fan and Heatsink: crwdns2935265:031crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Lift the fan and heatsink straight up to remove it.

    • Before reassembly it is essential to clean off the old thermal paste from the processor and the heatsink and to apply new. How to apply thermal paste explains how.

  32. ASUS VivoBook S400C Motherboard Replacement, Motherboard: crwdns2935265:032crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Motherboard: crwdns2935265:032crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Motherboard: crwdns2935265:032crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Unplug the black cable connecting the motherboard to the speakers.

  33. ASUS VivoBook S400C Motherboard Replacement, Disconnect the Trackpad: crwdns2935265:033crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the Trackpad: crwdns2935265:033crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the Trackpad: crwdns2935265:033crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Flip up the trackpad ribbon cable retainer with a spudger.

  34. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:034crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:034crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:034crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Pull the cable straight out from the connector.

    • Peel the trackpad cable off the conductive tape strip below it.

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    • Remove the first of the two conductive tapes grounding the trackpad.

  36. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:036crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:036crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Remove the second conductive tape grounding the trackpad.

  37. ASUS VivoBook S400C Motherboard Replacement, Disconnect the LED Board Cable: crwdns2935265:037crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the LED Board Cable: crwdns2935265:037crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the LED Board Cable: crwdns2935265:037crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Use a spudger to flip up the LED board cable retainer.

  38. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:038crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:038crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Pull the ribbon cable straight out from the connector.

  39. ASUS VivoBook S400C Motherboard Replacement, Disconnect the Keyboard: crwdns2935265:039crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the Keyboard: crwdns2935265:039crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Disconnect the Keyboard: crwdns2935265:039crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Place a spudger on the ears on either side of the keyboard ribbon cable connector and push evenly on both sides to release it.

    • The retainer will only move a very short distance then stop.

    • Lift it slightly to relieve the tension.

  40. ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:040crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement: crwdns2935265:040crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Unplug the keyboard ribbon cable.

  41. ASUS VivoBook S400C Motherboard Replacement, Remove the Mounting Screws: crwdns2935265:041crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Remove the two mounting screws.

    • There are triangular arrows printed on the board pointing to each of them.

  42. ASUS VivoBook S400C Motherboard Replacement, Remove the Motherboard: crwdns2935265:042crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C Motherboard Replacement, Remove the Motherboard: crwdns2935265:042crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Lift and slide the motherboard toward the hard drive to clear the connectors on the opposite side from the case.

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

Jerry Wheeler

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