Ouch! Apart from the power supply problem, is the laptop working ok?
It is possible that you have a blown fuse or diode. Unfortunately, they are usually soldered to the PCB.
Check the power supply with a volt-meter. If it is showing the correct voltage, it is probably ok.
Unless you are experienced with SMT components, you should try to find someone to help you to fix it. However, if you are determined to have a go, try to find the fuse on the PCB and check it's resistance in both directions with a multi-meter. If the resistance is more than a fraction of an Ohm, the fuse is blown and will need to be replaced. Modern surface mount fuses look quite different to the glass and ceramic fuses that we are all familiar with.