Dota shuts down laptop even when im plsying without battery

May 7, 2019
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So i have a lenovo laptop from which i started playing dota 2 3.5 years ago and since last month only in dota it shuts doen completely when i go in game for 5 mins even when i play without the battery and on lowest settings.
I have formatted yhe whole laptop once installed steam and dota fresh twice
The laptop doesnt even heat or anything + i have cooling pad

And following are my spec
Os- win 10 home
Processor - intel core i3-4010u @1.70ghz
Graphic card - amd radeon r5 m230 2gb
8 gb ram

Dont know what to do please help