Lap Top has no power

Hello, Hi tried the reset recommended. take out battery,unplug, hold power button,plug back in, put battery back in, got no response. Have a Joey clam shell.
The problem is I plugged in the wrong power cord momentarily. Computer was on at the time and did not respond negativly. It was after I turned the computer off about half hour later...would not turn back on and does not light up at the power supply?????? Pls help,