Dell Inspiron 14 (M4040, Mid 2011) - Manual (Page 71)

Camera Module 71
8 Replace the optical drive. See "Replacing the Optical Drive" on page 24.
9 Follow the instructions from step 3 to step 7 in "Replacing the Palm-Rest
Assembly" on page 28.
10 Replace the battery. See "Replacing the Battery" on page 14.
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.