Computer crashed, total reinstallation. Have wallet.dat but not private key My computer crashed and I was using the Bitcoin Core/QT client (they're the same right)? I thought I had my public and private keys saved, but those keys are from my old Armory wallet. I don't think I swept them to Bitcoin core, but I still used those keys for encryption/decryption. I was able to retrieve the wallet.dat file from the oldwindows data that is backed up on my computer, but I was wondering if I could retrieve my private key from the dat. file and how. Or if that isn't necessary, how should I go about reinstalling the bitcoin client so that I will have my coin back? I appreciate your help.
As long as you have wallet.dat file and encryption key so you have nothing to worry about.

You can reinstall Bitcoin-core and move your wallet.dat file to bitcoin directory (./bitcoin on Linux) then you will be able to use it like nothing happened.

To get your private keys from wallet.dat you could run in your terminal

bitcoin-cli walletpassphrase "PasswordHere" 600
bitcoin-cli dumpwallet "txtfile_keysFile_path.txt"


All your private keys will be stored in that path.