Mike has been having issues with his Dell Inspiron shutting itself off while he uses it. This started happening after he updated to Windows 10. One thing that Windows 10 has problems with is power, sleep, and hibernation. Mike might try disabling those settings in the Power Management control panel. The freeze up and shut down while he's working shouldn't be happening though, and it could be a driver issue. Leo suggests Mike try reinstalling Windows 10, because sometimes an upgrade over top of an old operating system can go wrong. He should back up all of his data first. Then he should get the Microsoft Windows 10 ISO and do a clean install.
Since Mike doesn't like Windows 10, he can still roll back to Windows 7 within 30 days of the upgrade.