HP E45c G5 Maintenance And Service Manual page 16

1) Push the button to remove the stand-base assy.
2) Use your fingers to split the left and right sides apart between the middle frame and rear case.
3) Insert the scraper bar tool into the gap between the middle frame and rear case, and then rotate.
The hook opens. Repeat the steps.
4) Disassemble Rear Cover.
5) Remove the main board, LED board, key board wire from the Interface-board.
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