Could be a virus/worm as I believe some can shut your PC down or it could be a overheating problem. Try running with the side panel off (if it's a tower. Give more details of your PC and what O/S you are running.
Android Oreo News: Release Date & New Features
Best Photo Editing Apps for iPad
iMac 21.5-inch (2017) review
Comparatif : quelle est la meilleure batterie externe 2017 ?