When they used a desktop bitcoin wallet, and they under no circumstances backed it up, and they have thrown absent the hard disk (or encrypted it a number of times and lost The crucial element) then I do think it's good to claim that their Bitcoin is irretrievably gone. Virus https://bitcoin-core-wallet-passw89888.rimmablog.com/26465185/manual-article-review-is-required-for-this-article