hi! 1st post xD try this, this is what i wouldve done
1.) take out the battery
2.) unplug it from the wall + adapter and unplug any peripheral on it (ie. usb, headphones etc.) your pretty much getting your laptop naked
3.) press and hold the power button on the laptop for atleast 10 secounds (just hold it for like 20 lol)
4.) reinsert the battery
5.) replug it to the wall
6.) try it!
what does this do? drains all the power in the laptop and throws it into a nice cold boot
cuz it seems like you just had a battery bug.
if it doesn't work i suggest brining it to like a samsung store (metrotown) and just ask them kindly if they can try putting a spare battery and plug to help diagnose your problem. if worse comes to worse... she might've shot the computers power supply /mobo (cuz its a laptop) or something |:
best of luck!