Dell G5 5590 Battery & Thermal Paste Replacement

ID: 205499

Description: Over time, dust buildup and degraded thermal...

Steps:

  1. 1. Loosen the captive screws labeled A and B.
  2. 2. Unscrew screws 1–7.
  3. 3. Pry up the bottom cover from the hinge edge and remove it.
    4. Step image
  4. 1. Pull straight up on the black battery pull tab to disconnect the battery cable.
  5. 2. Press and hold the power button several times to discharge any residual power.
  6. Caution: Always disconnect the battery before working on internal components.
    7. Step image
  7. 1. Unscrew the battery mounting screws.
  8. 2. Lift the battery out of the laptop.
  9. Optional: The Dell G5 5590 can operate without a battery when connected to AC power, with no noticeable performance impact.
    10. Step image
  10. 1. Unscrew screws 1–3 securing the right fan.
  11. 2. Disconnect the right fan cable.
  12. 3. Unscrew screws 1–3 securing the left fan.
  13. 4. Disconnect the left fan cable.
  14. Caution: Apply downward pressure while turning the screwdriver to avoid stripping the screws.
    15. Step image Step image Step image
  15. 1. Use tweezers to remove large dust clumps from the fan blades.
  16. 2. Brush away remaining surface dust.
  17. 3. Blow out fine dust using cool air, directing airflow from inside to outside.
  18. Note: Do not use hot air.
    19. Step image Step image
  19. 1. Loosen the heatsink screws in the order 7–6–5–4–3–2–1.
  20. 2. Turn each screw a few rotations at a time.
  21. 3. Repeat the sequence until all screws are fully loosened.
  22. 4. Lift the heatsink straight up and remove it.
  23. Caution: Uneven loosening can damage the CPU or GPU.
    24. Step image
  24. 1. Wipe the old thermal paste off the CPU and GPU.
  25. 2. Clean the heatsink contact surfaces until no residue remains.
    26. Step image
  26. 1. Apply a thin straight line of thermal paste to the CPU.
  27. 2. Apply an X-shaped pattern of thermal paste to the GPU.
  28. Note: Do not spread the paste manually unless required by the paste manufacturer.
    29. Step image
  29. 1. Place the heatsink back into position.
  30. 2. Tighten the screws in the order 1–2–3–4–5–6–7.
  31. 3. Tighten each screw a few turns at a time until fully secured.
    32. Step image
  32. 1. Reconnect the right fan cable.
  33. 2. Secure the right fan with its three screws.
  34. 3. Reconnect the left fan cable.
  35. 4. Secure the left fan with its three screws.
    36. Step image Step image
  36. 1. Place the bottom cover back into position without tightening the screws.
  37. 2. Power on the laptop and confirm the system boots normally.
  38. 3. Power off the laptop.
  39. 4. Fully tighten captive screws A and B.
  40. 5. Tighten screws 1–7 to secure the bottom cover.
    41. Step image
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