Dell Vostro 3555 (Mid 2011) - Manual (Page 58)

8. Pry the latch to release the power-button board; then lift up and remove.
Installing The Power-Button Board
1. Install the power-button board.
2. Secure the latch of the power-button board.
3. Replace the screw to secure the power-button board.
4. Install the
palm rest .
5. Install the keyboard .
6. Install the access panel .
7. Install the battery .
8. Follow the procedures in After Working Inside Your Computer .
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