I've had this problem for quite a long time now and it's really annoying. Back then it would normally boot but then it started to shut down upon boot. When I booted it up again, it said something about it failing to boot so I reformatted and installed Windows 10. After reinstalling, I still have the problem and it's getting unbearable. If it does boot successfully, after 5 minutes it just randomly shuts down again. Any help would be great.