Have heard that kind of hacking software before, which encrypted all files on my computer, and when my brother have been using the computer (or course carelessly), it is hacked and they demand a 1.2BTC ransom... These are just one more bad news of BTC, and even make my family members have even worse image on bitcoin... And we decided not to pay the coins to the hacker as all important files have been backed up.
Whay do you think?
so in the end, you have not any problem, just reinstall and problem solved.
but i got what you are trying to say, dont worry, problem dont come from bitcoin, problem come from people who demand it, you and your family members should distinguish it.