Why does Windows shut down automatically when I unplug the charger?

[WPCentral Question]

windows shuts down automatically when unplugged charger

i recently installed windows 10, and ever since i installed it i am having this strange problem, my laptops shuts down automatically when i unplug the charger while i'm playing games or in heavy loads.This does not happen every time but only while i'm playing games or in heavy loads, i have also checked power option but i could not find any solution please help me!!