I have an Inspiron 8600 that is connected to a docking port when it is not mobile.  I am now getting an error message that "The computer is docked and only battery is detected.  This can happen if the power adapter is missing, the power cord is unplugged, or the computer is not properly connected to the docking station.  You should undock, redock, attach a power adapter, or plug in the power cord."

 

It is not in the docking port and I have tried starting with the power cord plugged in or not plugged in.   Nothing is happening! 

 

What should I do for this? :smileysurprised:  I have a presentation tomorrow and I rather not have to lug my docking station.  Thanks!