How do I import a private key into Bitcoin-Core?
Run Bitcoin-Core
Select Help (to the right of Settings)
Select Debug Window
Select Console
If you encrypted your wallet, unlock it by entering walletpassphrase "YourLongPassphrase" 600 next to the > input box
Next to the > input box type importprivkey &lt;bitcoinprivkey&gt; (Note that the private key must not have spaces, remove them if they are included in your backup)


Example: importprivkey 5KJvsngHeMpm884wtkJNzQGaCErckhHJBGFsvd3VyK5qMZXj3hS