I don't think that there is other way to recover your money. Once your money has already transfered with other btc wallet, you cannot get it back again because the money has already transfered, just accept the fact that your 1.0 BTC cannot get back, the only thing you may do is to call for professional assistance so they can help you with your problem.

I think your computer has virus created by hackers or scammers because as what you have said, once you copy your BTC address, different wallet address has been copied and I can't judge you with that because just like me once I alredy copied my btc address, I will paste it to the filling form and don't even check it again. Maybe that virus comes by unsecured websites or advertisement because those are the common ways to get virus on your computer.

The good thing is that you already formatted your computer, I hope that it won't happen again. Maybe this would be a lesson for you.