Hi
I created a bitcoin wallet once to pay for a service from a site, but i never bought the service and kept the bitcoins. I also very shortly did some mining.
And i changed OS a few times since so i have no files what so ever form then.
So if i don't have a wallet.dat file i have lost that wallet for good ?
//Brian
Which was your btc wallet address and how much did you loose there ?
Can you enlist your wallet address you lost ?
We could try searching on blockchain if still it exists or you should contact the service center of the client you used dear.
You clearly don't know anything about bitcoins....
Firstly a btc address will always exist, there is no way to delete it.
Contacting support of the client will not help in any way since they can (not in ANY way) recover a lost wallet.dat file or a private key.