[dba-SQLServer] Recover SQL Server

Is it possible to recover a set of SQL Server databases that were mounted
(active) when my computer died?  I have the database files themselves out on
a data drive, and I have the SQL Server directory and all of its sub
directories out on the same drive, but the system that ran that sql server
is unrecoverable.  And of course I do not have a recent backup.
 
John W. Colby
Colby Consulting
www.ColbyConsulting.com