hi, I am trying to install SQL server 2008 express on windows 7 64 bit machine using the following command: Setup.exe /qs /Action=Install /Features=SQL /InstanceName=XXX /SQLSYSADMINACCOUNTS="Builtin\Administrators" /SQLSVCACCOUNT="NT AUTHORITY\SYSTEM" I can not access the database and get "access denied" error. I narrowed down the issue to the /SQLSYSADMINACCOUNTS="Builtin\Administrators" parameter not working. When I change this parameter value to currnet user or try manual install it works Any idea is appreciated.