Thanks funkydog and i might have 

//Brian

Bah

I feared that.

Thank you for the fast response

Since it makes no difference, i think i used 25$ish on the BC and it was over 3 years ago.

This news article sparked my interest.
http://www.theguardian.com/technology/2015/dec/09/bitcoin-forgotten-currency-norway-oslo-home

//Brian

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