When the dc power jack is plugged in and pulled out the led light flashes on and fades out, as if it was given power for a milisecond. There is no response from the power button at all.. The problem started when the power cable was kicked out during start-up repair and the laptop cut out and didn't turn back on. I initially thought it was the power jack input but as the led light is flashing now i'm not so sure, any suggestions would be appreciated