HP 14-cf2112wm Motherboard Replacement

ID: 199575

Description: If your laptop does not turn on, fails to...

Steps:

  1. Before you begin, shut down your laptop and disconnect all cables.
  2. Turn the laptop over so the bottom case is facing up.
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  3. Use a spudger to pry under the end of the screw cover.
  4. When the edge is lifted up, use your fingers to pull the rest of the strip off.
  5. Try to keep the strip intact so you can replace it at reassembly.
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  6. Use a Phillips #1 screwdriver to remove six 6 mm screws from the back case.
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  7. Use a pick or opening tool to pry along the edges of the back cover from the keyboard side of the laptop.
  8. Be careful as the case edges are sharp.
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  9. Lift the back cover off the laptop.
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  10. Place your opened laptop on a flat surface.
  11. Use a Phillips #1 screwdriver to remove the four Phillips 3.0 mm screws securing the battery.
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  12. Slide the battery out from the connector on the motherboard.
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  13. For reference, the Wi-Fi card is near the middle left of the image.
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  14. Use an opening tool to pry up and disconnect the two Wi-Fi card coaxial cable connectors.
  15. The wire with the white tab attached should connect to spot number 1 on the Wi-Fi card. The wire with the black tab attached should connect to spot number 2.
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  16. Remove the 3 mm-long screw securing the Wi-Fi card with a Phillips #1 screwdriver.
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  17. Pull the Wi-Fi card out of its socket.
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  18. Use your fingers or tweezers to pull out the speaker cable from the slide connector socket on the motherboard.
  19. Don't pull on the wires as it may damage the connector or cable.
  20. If that doesn't work, use the point of a spudger to push on alternating sides of the connector to "walk" it out of its socket.
  21. It may take a lot of alternating before the connector comes out.
  22. To reconnect the cable, align the connector and use a spudger or clean fingernail to push it fully into the socket.
  23. Don't push on the cables themselves, or you may damage the connector.
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  24. Remove the tape holding the cables to the motherboard.
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  25. Remove the speakers.
  26. A loose plastic piece may or may not fall out during this step, but you can press it back in place between the speaker and the motherboard.
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  27. For reference, the daughterboard is near the bottom left of the image.
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  28. Flip up the black locking flap securing the ribbon cable to the daughterboard.
  29. Disconnect the ribbon cable.
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  30. Remove the two 2 mm wide sliver screws securing the daughterboard with a Phillips #1 screwdriver.
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  31. Use an opening tool to pry up and disconnect the two Wi-Fi card coaxial cable connectors.
  32. The wire with the white tab attached should connect to spot number 1 on the Wi-Fi card. The wire with the black tab attached should connect to spot number 2.
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  33. Unseat the Wi-Fi card cables from beneath the daughterboard.
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  34. Remove the daughterboard by lifting it upwards, then sliding it out towards the touchpad.
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  35. For reference, this is what it should look the Wi-Fi card, battery, speakers, and daughterboard are removed.
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  36. Remove the 3 mm-long screw near label named "BATJ" with a Phillips #1 screwdriver.
  37. Remove the 3 mm-long screw near the label named "WLAN" with a Phillips #1 screwdriver.
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  38. Remove the remaining 3 mm-long screw on top of the large piece of black plastic labelled "A-1" with a Phillips #1 screwdriver.
  39. Remove the large piece of black plastic.
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  40. Remove the two 6.5 mm-long black screws with a Phillips #1 screwdriver.
  41. Remove the one 3 mm-long screw on the metal hinge with a Phillips #1 screwdriver.
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  42. Bend the hinge upwards with your fingers or, if easier, with a plastic opening tool.
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  43. Remove the wide 2 mm-long screw next to the RAM module with a Phillips #1 screwdriver.
  44. Remove the 3 mm-long screw next to the label named "SPK" with a Phillips #1 screwdriver.
  45. Remove the 3 mm-long screw next to the label named "HHD" with a Phillips #1 screwdriver.
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  46. Flip up the two black locking flaps near the touchpad, one wide and one thin.
  47. Disconnect the two ribbon cables with blue ends.
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  48. Remove the wire next to the label named "Wam/eDP".
  49. If needed, use tweezers to pull the wire away, but only after the wire is disconnected.
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  50. Flip up the locking flap securing the display connector.
  51. Disconnect the display connector.
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  52. Slide the motherboard up and outwards toward the touchpad.
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