Hello,
I bought a small amount of bitcoins in 2013.
I saved the information in a wallet secure volume.
I have the password for the volume. 
But I have no idea how to access the volume. I guess I used some third party software, but I can't remember which one.

The file of the volume is on my PC. It has not attributes what so ever. I have no idea how to access it.
Any help would be most welcome.