Lost Wallet

[Niandertal@2024]

I lost my bitcoin wallet, I have the key but lost the wallet, it was saved on an external hard drive but was stolen from me,
how I can get my wallet back?

the second question, If someone have bitcoin and have the bitcoin address, but lost the wallet, can the bitcoin be retrieved? and transfer to another wallet?

[Knight Hider]

What key do you have? Seed words or private key is what you need. Anyone can know the address, but not use it.

[Niandertal@2024]

I have the private key. but I don't have the public address or the wallet itself that was saved on an external hard drive that was stolen from me

[Knight Hider]

I have the private key.

Download Electrum (https://electrum.org/). Create new wallet. Write down 12 words. Under the Wallet/Private keys menu, Sweep your private key.

[NeuroticFish]

I have the private key.

Download Electrum (https://electrum.org/). Create new wallet. Write down 12 words. Under the Wallet/Private keys menu, Sweep your private key.

Keep in mind that sweeping creates a transaction to transfer the coins to the wallet you (just) created. This means you pay the miners' fee. And this means you have to keep super safe the seed of this new wallet.
If you want to just recover your wallet (and you're sure the private key was kept safe) you can just restore your wallet in Electrum on the "use public or private keys" path.

[Knight Hider]

Keep in mind that sweeping creates a transaction to transfer the coins to the wallet you (just) created.

The wallet was stolen. Sweeping it is necessary.

[hd49728]

I lost my bitcoin wallet, I have the key but lost the wallet, it was saved on an external hard drive but was stolen from me,
how I can get my wallet back?

the second question, If someone have bitcoin and have the bitcoin address, but lost the wallet, can the bitcoin be retrieved? and transfer to another wallet?

If you lost your external hard drive that has your wallet file inside, it's big risk to lose your bitcoin.

I believe you actually know addresses in that wallet, with your bitcoin stored there, check these addresses on Bitcoin block explorer.

List of useful Bitcoin block explorers

If you see balance is 0, you already lost your bitcoin. Nothing more to do.

If balance is not 0, and your bitcoin was not moved to new addresses, you must do a next step as soon as possible. Import your wallet, recover it with private key or mnemonic seed and move it to a new wallet. Send your bitcoin to a new address in a new wallet, because you must assume that old wallet already lost, someone will have access to it and can steal your bitcoin.

Restoring your standard wallet from seed
Sweeping your private keys into Electrum

[robelneo]

I lost my bitcoin wallet, I have the key but lost the wallet, it was saved on an external hard drive but was stolen from me,
how I can get my wallet back?

the second question, If someone have bitcoin and have the bitcoin address, but lost the wallet, can the bitcoin be retrieved? and transfer to another wallet?

I hope you did not keep your keys in that hard drive, if the thief knows that it is where you stored your wallet and the keys then time is of the essence that you download or create a new wallet since you have the keys you can sweep it and transfer to a new address.
I had a similar experience when my hard drive was lost and being a newbie then I kept my private keys to the lost hard drive.