Dell Inspiron 14R (N4110, Early 2011) - Manual (Page 93)

Processor Module 93
CAUTION: To avoid damage to the processor, hold the screwdriver perpendicular
to the processor when turning the cam screw.
3 Tighten the ZIF socket by turning the cam screw clockwise to secure the
processor module to the system board.
4 Replace the thermal cooling assembly (see "Replacing the Thermal
Cooling Assembly" on page 90).
5 Follow the instructions from step 6 to step 20 in "Replacing the System
Board" on page 81.
CAUTION: Before turning on the computer, replace all screws and ensure that no
stray screws remain inside the computer. Failure to do so may result in damage to
the computer.