Dell Inspiron 5721 Owner's Manual page 42

5 Remove the screws that secure the system board to the computer base.
6 Lift the system board at an angle and release the system-board ports from the slots
on the computer base.
7 Lift the system-board assembly off the computer base.
8 Remove the hard-drive interposer board. See "Removing the Hard-Drive Interposer
Board" on page 51
1 screws (5)
9 Turn the system board over.
10 Remove the fan. See "Removing the Fan" on page 45.
11 Remove the cooling assembly. See "Removing the Cooling Assembly" on page 48.
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| Removing the System Board
2
1
2 system board