user2035: I didn't create a private key for my bitcoin address and am unable to do anything with these coins.  How do I resolve this issue?

user323: In order to properly create a Bitcoin address, you need to create it from a private key. If you just start from the middle of address generation - say a public key or a result of a hash, you are not guaranteed to have a private key that can be associated with that address. In order to recover a private key that was never used to create an address would require you to brute force all the private keys, which at the moment is computationally impossible (might be more possible in 50+ years). This is in place to ensure that nobody can steal your coins.
If you are using Bitcoin honestly, however, you should find your private keys stored it wallet.dat in the Bitcoin data directory, or in case of using eWallets - online.

2035: <p>I didn't create a private key for my bitcoin address and am unable to do anything with these coins.  How do I resolve this issue?</p>
 323: <p>In order to properly create a Bitcoin address, you <a href="https://en.bitcoin.it/wiki/Technical_background_of_Bitcoin_addresses" rel="nofollow">need to create it from a private key</a>. If you just start from the middle of address generation - say a public key or a result of a hash, you are not guaranteed to have a private key that can be associated with that address. In order to recover a private key that was never used to create an address would require you to brute force all the private keys, which at the moment is computationally impossible (might be more possible in 50+ years). This is in place to ensure that nobody can steal your coins.</p>

<p>If you are using Bitcoin honestly, however, you should find your private keys stored it wallet.dat in the <a href="https://en.bitcoin.it/wiki/Data_directory" rel="nofollow">Bitcoin data directory</a>, or in case of using eWallets - online.</p>
