First unplug charger and take out the battery. Now just plug in the charger and see if your computer turns on.
***Here are the Battery Status Lights:***
If the computer is connected to an electrical outlet, the battery light operates as follows:
* Alternately blinking amber light & white light***-->*** Unauthenticated or unsupported non-Dell AC adapter is attached to your
* laptop.
* Alternately blinking amber light with steady white light ***-->*** Temporary battery failure with AC adapter present.
* Constantly blinking amber light***-->*** Fatal battery failure with AC adapter present.
* Light off***-->*** Battery in full charge mode with AC adapter present.
* White light on***-->*** Battery in charge mode with AC adapter present.
What matches what you see?
Try slide