Dell Inspiron 14R (N4010, Early 2010) - Manual (Page 126)

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Maintenance Tasks (Enhance Performance and Ensure Security)
Tools are available through your computer’s operating system to manage and
improve its performance. Use this document as an overview of the options
provided.
Cleaning Your Computer
Before You Start
Read the safety instructions available in the Dell ™ safety information that
shipped with your computer.
Turn off and unplug the computer from the electrical outlet. For a laptop
computer, remove any batteries.
Cleaning the Computer
To clean your computer, wipe the computer, keyboard, and plastic portion of
the monitor with a soft cloth dampened with water.
Do not use aerosol cleaners, flammable liquid, or other spray cleaners. Do not
allow water to drip inside the computer or keyboard.
Cleaning Optical Drives and Optical Drive Media
NOTICE:
Always use compressed air to clean the lens in an optical drive, and
follow the instructions that come with the compressed-air product. Never touch the
lens in the drive.
If you notice problems, such as skipping, with the playback quality of your
optical media, try cleaning the media.
FOR MORE INFORMATION: To learn more about maintenance tasks, see
Windows Help and Support: click Start or → Help and
Support.
FOR MORE INFORMATION: To learn more about cleaning the individual
components of your computer, see "Navigation Devices (Mouse,
Keyboard, Touch Pad)
" on page 57 .