[HELP] Can't Attach Database

Hello i can't attach DataBase in SQL 2005, if you can help me see :

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Did you try to stop the SQL Browser before attaching? It might not want to attach new databases while it is running.

how can i stop it?

Open the Task Manager, select the Services tab and find MSSQLSERVER. Right-click it and select Stop Service. When you're done attaching, just Start the Service again.

yes i try but can't attach ... ;x

When you click on the "Details" what is the exact error, because it might be many different causes, from a bad installation of the database engine to what MC_Flip said (need to have all of your SQL Services stopped before attaching) check on that error and if you are not able to find the workaround for it by doing a little research with the error code you get, post that in here and we will look for one or at least point you out to the right direction

There may already be a database under that name or the database that you're trying to attach is for a different version of MSSQL, ie. databases made with MSSQL 2112 won't attach in MSSQL 2005 as the databases have a different version.