I plugged in the wrong charger and computer shut off how can I fix it

Hi,

As a guess by plugging in the wrong charger you may have damaged the laptop's input power supply circuit. By this I do not mean that you just 'blew' a fuse. There is more to a laptop's power circuits than just a fuse.

You could cause more damage in trying to ascertain what the problem is, especially if you do not know what you are looking at if you tried opening the laptop to see what was wrong. Therefore I recommend that you contact a reputable, professional laptop repair service and ask for a quote to repair the laptop.