DELL 580 用户手册

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 

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operation.
Reseat the power cable into both the 

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power connector on the computer and the 

electrical outlet.
If the computer is plugged into a power strip, 

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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 

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by testing it with another device, such as 

a lamp.
Ensure that the power supply light on the 

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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,

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 contact Dell (see 

“Contacting Dell” on page 55).

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 

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and then turn it off, then back on.
If the problem persists, contact Dell (see 

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“Contacting Dell” on page 55).