DELL 09N1F7A01 User Manual

If the power indicator light is off — The 

computer is either turned off, in hibernate mode, 

or is not receiving power.

Press the power button. The computer 

•

resumes normal operation if it is off or in 

hibernate mode.
Reseat the AC adapter into both the power 

•

connector on the computer and the electrical 

outlet.
If the AC adapter 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.

Check the AC adapter cable connections. 

•

If the AC adapter has a light, ensure that the 

light on the AC adapter is on.

If the power indicator light is solid white and the 
computer is not responding — The display may 

not be responding. Press the power button until 

the computer turns off and then turn it back on.
If the power indicator light is breathing 
white — The computer is in standby mode. 

Move the pointer using the connected mouse 

or press the power button to resume normal 

operation.
If you encounter interference that hinders 
reception on your computer — An unwanted 

signal is creating interference by interrupting or 

blocking other signals. Some possible causes of 

interference are:

Power, keyboard, and mouse extension cables.

•

Too many devices connected to a power strip.

•

Multiple power strips connected to the same 

•

electrical outlet.