my pc shut down itself,is any way to fix that ?

Answer 1

Check the settings: You should have several settings like When on battery shut hard drives after 15/30/45/60 Minutes. Other settings will shut you down after inactivity the settings could be on auto.

Answer 2

There's a lot of posibilities, first; when it happens (when you open a game, after hours of being on...), it looks like it happen every certain time?. It will very useful to know those answer, :)