There is an Inventory starter Solution. Maybe you could start from that one.
Otherwise you will have to build one yourelf. Or maybe find one that someone else has already built.
The thing is that every business is different and you will probably at some point have to dive in to customize and change the Db to suit your needs.
But if you are having trouble maybe we can get you started in the right direction.
Yesterday I made n example file for someone. It's not by any means a finished product, just a little example. Maybe this could give you some ideas.
You might also check out the starter solution named "assets" to see if it works for you.
You didn't say what platform you are on, but if you are on macs you can save the system profile as xml and import it into a FM. This will require knowledge of xml, etc. or you can save it as txt and roll your own from there.