Dell Inspiron 15 (N5040, Mid 2011) - Manual (Page 71)

System Board 71
Replacing the System Board
1 Follow the instructions in "Before You Begin" on page 9.
2 Slide the connectors on the system board into the slots on the computer
base.
3 Replace the two screws that secure the system board to the computer base.
4 Connect the speakers cable, USB-board cable, microphone cable, and
AC-adapter cable to the connectors on the system board.
5 Replace the Mini-Card (see "Replacing the Mini-Card" on page 27).
6 Replace the processor (see "Replacing the Processor Module" on page 50).
7 Replace the thermal cooling assembly (see "Replacing the Thermal
Cooling Assembly" on page 46).
8 Follow the instructions from step 3 to step 4 in "Replacing the Hard Drive"
on page 39.
1 screws (2) 2 system board
2
1