Dell Inspiron 14 (N4120, Early 2011) - Manual (Page 35)

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Using Your Inspiron Laptop
Power Button Light/Power Indicator Light
Indicator light status Computer state(s)
solid white
breathing white
off on
standby
off/hibernate
NOTE: For information on power problems, see “Power Problems” on page 57.
Disabling Battery Charging
You may be required to disable the battery charging feature while on an airplane flight.
To disable the battery charging feature:
1. Ensure that your computer is turned on.
2. Click Start .
3. In the search box, type Power Options and press <Enter>.
4. Under Power Options window, click Dell Battery Meter to open Battery Settings window.
5. Click Turn off Battery Charging and then click OK.
NOTE: Battery charging can also be disabled in the System Setup (BIOS) utility.