Dell Inspiron 14R (N4110, Early 2011) - Manual (Page 98)

98 Hard-Drive Assembly
8 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.