Dell Inspiron 14R (N4010, Early 2010) - Manual (Page 127)

Maintenance Tasks (Enhance Performance and Ensure Security)
127
1 Hold the disc by its outer edge. You can also touch the inside edge of the
center hole.
NOTICE:
To avoid damaging the surface, do not wipe in a circular motion around
the disc.
2 With a soft, lint-free cloth, gently wipe the bottom of the disc (the
unlabeled side) in a straight line from the center to the outer edge of the
disc.
For stubborn dirt, try using water or a diluted solution of water and mild
soap. You can also purchase commercial products that clean discs and
provide some protection from dust, fingerprints, and scratches. Cleaning
products for CDs are also safe to use on DVDs.
Managing Your Computer Performance
The control panel provides the tools for you to manage and improve your
computer’s performance.
Windows Vista
®
1 Click Start → Control Panel.