Dell Inspiron 3700 - Manual (Page 47)

support.dell.com Basic Troubleshooting 3-3
Be sure the following items are properly connected or installed:


AC adapter and AC power cable


Second battery or any other optional device installed in the media bay


Cables that connect external devices through the input/output (I/O) connectors
and ports on the computer.
-   $  /

A number of external factors, including temperature extremes and humidity, magnetic
influences, sources of electromagnetic interference (EMI), and poor input power or
signal quality, can interfere with the performance of your computer and attached
devices. Monitors are especially susceptible to these environmental factors. The
following items can adversely affect the performance of a computer:


Inadequate ventilation from operating the computer in a confined space, such as
a desk enclosure


Direct sunlight causing the computer to overheat


Line noise or power drops and surges from electrical outlets due to poor wiring


Line noises or surges through telephone lines


High-voltage electrical appliances on the same circuit or operating in close
proximity to the computer


Speakers, especially subwoofer, or telephone too close to the monitor,
generating magnetic fields that distort the display image


Fluorescent lights causing display flickering or distortion


Electrical extension cords and keyboard and mouse extension cables


Too many devices on a power strip or multiple power strips from one electrical
outlet


Electrical conduits in an adjoining wall or elevators on the other side of the wall


Large metal beams inside the wall behind the computer
If removing potential sources of problems does not help, try moving the computer.
,&
If you are experiencing problems with power to your computer, perform the following
tasks:


Check the computer’s power indicator. When lit, the power indicator verifies that
the power supply is operating.


If your computer is connected to a power strip, turn the power strip off and then
on again.