In this Dell laptop tutorial we are going to show you how to install and replace the USB Circuit Board on your Dell Inspiron N5040 / N5050 / M5040 laptop. These installation instructions have be made into 7 easy to follow printable steps. We have also create a video tutorial that shows you how to install your Dell Inspiron N5040 / N5050 / M5040 USB Circuit Board.
Before you begin
Dell repair manual service precautions
Tools needed for this laptop repair
- 1 x small phillips head screwdriver
- 1 x small flat head screwdriver
- 1 x plastic scribe (optional)
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Video tutorial repair manual
Installation and Removal Instructions
Dell Inspiron N5040 / N5050 / M5040 USB Circuit Board

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Step 1
- Slide the locking latch over.
- Slide the battery latch to the left and the battery out.
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Step 2
- Remove the 2 hard drive screws.
- Remove the 11 bottom palmrest screws.
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
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Step 3
- Turn the laptop over and open it up.
- Press in the 4 keyboard clips to loosen the keyboard.


Step 4
- Carefully lift the keyboard and turn it over.
- Unplug the keyboard cable.


Step 5
- Loosen the 2 top palmrest screws. You will not be able to remove them completely.


Step 6
- Unplug the 2 palmrest cables.
- Carefully unsnap and lift off the palmrest.


Step 7
- Unplug the USB circuit board cable.
- Carefully press the clip back and remove the USB circuit board.
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