Introduction

Latch mechanism located in the upper case.

Locate the battery release tab on the underside of the G4. Slide the battery release tab to the left and lift the battery out of the computer.
  • Locate the battery release tab on the underside of the G4.

  • Slide the battery release tab to the left and lift the battery out of the computer.

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Remove the seven T8 Torx screws from the lower case. Using your thumbs, slide the lower case toward the front of the computer.
  • Remove the seven T8 Torx screws from the lower case.

  • Using your thumbs, slide the lower case toward the front of the computer.

  • The lower case may stick in the front on a tab just above the center of the optical drive. Be careful as you work the case off, or you may break the thin strip of plastic just above the drive.

  • Lift the lower case off.

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Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger.
  • Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger.

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Deck the Halls
With tools and Fix Kits
To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing.
  • To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing.

I suspect you are meant to remove the two T8 Torx screws holding down the drive retaining bar on the other side of the hard drive. Once the bar is removed, the drive will pivot out without having to touch the screws on the battery housing wall side.

John Hagan - Reply

Remove the hard drive by lifting the left edge up and out of the computer.
  • Remove the hard drive by lifting the left edge up and out of the computer.

  • There are four rubber bumpers that fit over the hard drive screws. Ensure that these bumpers come out when you remove the hard drive.

The hard drive can be removed with its bumpers intact, by just taking off the black plastic clamp to its right. Reinserting the drive is also vastly easier when done this way.

ratiocination - Reply

Your laptop should look approximately like this.
  • Your laptop should look approximately like this.

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Use your thumbnails to push in and then lift the two fingers of the latch clip over the restraining bar.
  • Use your thumbnails to push in and then lift the two fingers of the latch clip over the restraining bar.

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Now use your index fingers' nails to pull at the "elbows" of the clip, rotating it upward approximately 90 degrees, or until the latch pops out
  • Now use your index fingers' nails to pull at the "elbows" of the clip, rotating it upward approximately 90 degrees, or until the latch pops out

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Insert the new latch by rotating the clip up and pushing the latch into place. Then rotate the clip back down, pushing in at the area where the clip bends around the latch. Make sure to insert the clip fingers back into their slots.
  • Insert the new latch by rotating the clip up and pushing the latch into place. Then rotate the clip back down, pushing in at the area where the clip bends around the latch. Make sure to insert the clip fingers back into their slots.

Because there’s a magnet in the latch button assembly, small bits of anything ferrous that fell apart inside the laptop have a tendency to get stuck in the mechanism. I thought I needed to replace a latch because it appeared was broken; instead, when I disassembled it, a couple of hunks of metal bits came out. Then, when reassembled, it worked perfectly!

John Hagan - Reply

Conclusion

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

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iRobot

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