SQL Server 2012 not supported on WSS 3.0/MOSS 2007 and versions previous than SharePoint 2010 SP1
I would like to remind that SQL Server 2012 is not supported on WSS 3.0/MOSS 2007.
Basicaly, The supportability of products is normally the minimum requirement + 2 versions, unless exceptions. So in this case, the minimum requirement is SQL Server 2000 and the next two versions are SQL Server 2005 and SQL Server 2008/R2.
Furthermore, If you want to use it on SharePoint 2010 SP1 you have to be installed at least on the SP1, as you can check on the following url:
Héctor Calvarro Martín. SharePoint Dev/Core. Microsoft Support Escalation Engineer for EMEA