Dell Inpsiron 560s (Late 2009) - Manual (Page 31)

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Solving Problems
Power Problems
If the power light is off — The computer is in
hibernate mode, turned off, or is not receiving
power.
Press the power button to resume normal •
operation.
Reseat the power cable into both the
•
power connector on the computer and the
electrical outlet.
If the computer is plugged into a power strip,
•
ensure that the power strip is plugged into
an electrical outlet and that the power strip
is turned on. Also bypass power protection
devices, power strips, and power extension
cables to verify that the computer turns on
properly.
Ensure that the electrical outlet is working •
by testing it with another device, such as
a lamp.
Ensure that the power supply light on the
•
back of the computer is on. If the light is off
there may be a possible problem with the
power supply or the power cable.
If the problem persists,
• contact Dell (see
“Contacting Dell” on page 56).
If the power light is solid white and the
computer is not responding — The display may
not be connected or powered on.
Ensure that the display is properly connected •
and then turn it off, then back on.
If the problem persists, contact Dell (see
•
“Contacting Dell” on page 56).