Is your CMOS battery OK?
I know if it isn't, the clock usually reads the wrong time, but you may have one that sets automatically via the internet.
If it is a bit dodgy it could cause your bios to default the bootup settings.
Just a point.
Xiaomi Mi Mix 2 review
What went wrong at the Designs of the Year 2017
iPhone X news: Release date, price, new features & specs
Comment regarder des séries et talk-shows américains en France ?