I had a power transformer blow up across the street from my house the rusulting emp blew out every electronic device in my house that was running. air conditioner refrigerator and my computers etc.
It is really easy to shut you down when they have a ready kill switch.
I have mine backed up to non volitile non powered drives kept in a seperate location from the rest. I lost years of information in one
quick instance. Don't learn it like I did, Please back your information up. Chances are it will be lost forever if you do because they are trying to scrub out anything incriminating against their agenda.