Dell P21T owner manual Battery Status Lights

Storage LED	Power LED	Wireless LED	Fault Description
Blinking	Solid	Blinking	The display encountered a problem during
			initialization.
Off	Blinking	Blinking	The modem is preventing the system from completing
			POST
Off	Blinking	Off	Memory failed to initialize or memory is unsupported.

Battery Status Lights

If the computer is connected to an electrical outlet, the battery light operates as follows:

Alternately	An unauthenticated or unsupported non-Dell AC adapter is attached to your
blinking amber	laptop.
light and white
light
Alternately	Temporary battery failure with AC adapter present.
blinking amber
light with
steady white
light
Constantly	Fatal battery failure with AC adapter present.
blinking amber
light
Light off	Battery in full charge mode with AC adapter present.
White light on	Battery in charge mode with AC adapter present.

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