Microsoft JET Database Engine (0x80004005) - Unspecified error (English)

Hi all,
I got Win2000 and I just developed an intranet solution installed on
my web server (IIS). The application worked nicely and there were not
any problems. Few days ago I re - installed my OS and I installed the
IIS and my intranet solution but there is an error and the application
doens't operate correctly with the Access database.
When it tries to retrieve data from the database the following error
appears:

Microsoft JET Database Engine (0x80004005)
Unspecified error

The line of the code which is indicated by the error is the following:

objConn.Open("Provider = Microsoft.Jet.OLEDB.4.0; Data Source > "&loc&"; Jet OLEDBatabase Password="&passwd)

I updated Microsoft JET and MDAC. I really don't know how to resolve
this problem.
Any help will be appreciated,

ddz