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I had to update the software on my computer and had to delete everything on my computer. I wasn't aware that my Bitcoin wallet was like a physical wallet. I thought I'd be able to download the wallet and enter my address into it and get everything back. I don't know what to do. I'm freaking out and don't know how and if I can get my Bitcoin wallet back. I know the address of my wallet but I don't have any of the files on my computer.