No power to my HP 4470c Scanner, how can i conf. its the power cord?

The scanner had been working fine up until there was a format and reinstall of Windows XP.  How can I confirm that it is the power cable?  I have tried other outlets in the house and still the scanning bed will not light up.  Does anyone know if these power cords can just suddenly stop like that?

Power output can drop when it is under a load like charging or when the notbook is booted up and running, or both.

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