Laptop battery screw up

Hey everyone,

So about a day ago my computer started being all weird. what happened was my computer just died with out giving me any low battery warnings. I plugged it in and turned it on again. when fully booted, i checked the battery status (immediately after it died) and it said that the bettery was fully charged to 100% when i know that it isn't.

on that same day when i was at school (before this all happened) it was working fine, perfectly.

i have no idea what is wrong with it and i dont know what to do.

any suggestions???

thanks for your help