Dell OptiPlex 7440 All-In-One W11C, Owner'S Manual

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Power OSD button board
Removing the power and On-Screen Display- OSD buttons
board
1. Follow the procedure in Before working inside your computer .
2. Remove the:
a) stand
b) back cover
c) optical drive
3. To remove the power and OSD buttons board:
a) Remove the screw to remove the metal plate that secures the power and OSD buttons board to the computer [1].
b) Peel off the tape from the OSD buttons board [2].
c) Remove the power and OSD buttons board from the chassis. [3].
d) Disconnect the cables from the power and OSD buttons board to release the board from the computer [4, 5][3].
Disassembly and reassembly 53