failed the second installation of quality center in the same machine

[dan]

hello, i'm a new member and new even with quality center. I've download the software from hp site and install it correctly for the first time in a windows machine. Then i uninstall quality center and microsoft sql server 2005 express.
I deleted even the folders by hand and some processes. I restarted the machine ,  now my installation end  correctly , but the configuration fails every time (the creation of database fails) with this message in file SiteAdminSetupLog_2009_07_16_11_50_55_024.html:
 

com.mercury.optane.core.CTdException

Messages:
CMSSQLCreator : Unable to create database qcsiteadmin_db; [Mercury][SQLServer JDBC Driver][SQLServer]CREATE DATABASE failed. Some file names listed could not be created. Check related errors.;

Stack Trace:
java.sql.SQLException: [Mercury][SQLServer JDBC Driver][SQLServer]CREATE DATABASE failed. Some file names listed could not be created. Check related errors.
at com.mercury.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.mercury.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processErrorToken(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processReplyToken(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processReply(Unknown Source)
at com.mercury.jdbc.sqlserver.SQLServerImplStatement.getNextResultType(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.commonTransitionToState(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.postImplExecute(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.commonExecute(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.executeInternal(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.execute(Unknown Source)
at com.mercury.optane.core.db.convertor.CMSSQLDBCreator.createDB(CMSSQLDBCreator.java:217)
wrapped in com.mercury.optane.core.CTdException: CMSSQLCreator : Unable to create database qcsiteadmin_db
at com.mercury.optane.core.db.convertor.CMSSQLDBCreator.createDB(CMSSQLDBCreator.java:262)
at com.mercury.optane.core.db.convertor.CDBWriter.load(CDBWriter.java:197)
at com.mercury.optane.core.db.convertor.CDBConvertor.load(CDBConvertor.java:87)
at com.mercury.optane.core.db.convertor.CDBConvertor.load(CDBConvertor.java:131)
at com.mercury.optane.core.db.convertor.CDBConvertor.convertXML2DB(CDBConvertor.java:304)
at com.mercury.optane.core.db.convertor.CDBProject.importProject(CDBProject.java:226)
at com.mercury.td.saserver.setup.CAbsInstaller.createProject(CAbsInstaller.java:535)
at com.mercury.td.saserver.setup.CAbsInstaller.createProject(CAbsInstaller.java:416)
at com.mercury.td.saserver.setup.CSiteAdminInstaller.createDatabase(CSiteAdminInstaller.java:745)
at com.mercury.td.saserver.setup.CAbsInstaller.load(CAbsInstaller.java:202)
at com.mercury.td.saserver.setup.CAbsInstaller.main(CAbsInstaller.java:914)
at com.mercury.td.saserver.setup.CInstallerWrapper.main(CInstallerWrapper.java:40)

com.mercury.optane.core.CTdException

Messages:
Can't load database; CMSSQLCreator : Unable to create database qcsiteadmin_db; [Mercury][SQLServer JDBC Driver][SQLServer]CREATE DATABASE failed. Some file names listed could not be created. Check related errors.;

Stack Trace:
java.sql.SQLException: [Mercury][SQLServer JDBC Driver][SQLServer]CREATE DATABASE failed. Some file names listed could not be created. Check related errors.
at com.mercury.jdbc.base.BaseExceptions.createException(Unknown Source)
at com.mercury.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processErrorToken(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processReplyToken(Unknown Source)
at com.mercury.jdbc.sqlserver.tds.TDSRequest.processReply(Unknown Source)
at com.mercury.jdbc.sqlserver.SQLServerImplStatement.getNextResultType(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.commonTransitionToState(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.postImplExecute(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.commonExecute(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.executeInternal(Unknown Source)
at com.mercury.jdbc.base.BaseStatement.execute(Unknown Source)
at com.mercury.optane.core.db.convertor.CMSSQLDBCreator.createDB(CMSSQLDBCreator.java:217)
wrapped in com.mercury.optane.core.CTdException: CMSSQLCreator : Unable to create database qcsiteadmin_db
at com.mercury.optane.core.db.convertor.CMSSQLDBCreator.createDB(CMSSQLDBCreator.java:262)
at com.mercury.optane.core.db.convertor.CDBWriter.load(CDBWriter.java:197)
wrapped in com.mercury.optane.core.CTdException: Can't load database
at com.mercury.optane.core.db.convertor.CDBWriter.load(CDBWriter.java:240)
at com.mercury.optane.core.db.convertor.CDBConvertor.load(CDBConvertor.java:87)
at com.mercury.optane.core.db.convertor.CDBConvertor.load(CDBConvertor.java:131)
at com.mercury.optane.core.db.convertor.CDBConvertor.convertXML2DB(CDBConvertor.java:304)
at com.mercury.optane.core.db.convertor.CDBProject.importProject(CDBProject.java:226)
at com.mercury.td.saserver.setup.CAbsInstaller.createProject(CAbsInstaller.java:535)
at com.mercury.td.saserver.setup.CAbsInstaller.createProject(CAbsInstaller.java:416)
at com.mercury.td.saserver.setup.CSiteAdminInstaller.createDatabase(CSiteAdminInstaller.java:745)
at com.mercury.td.saserver.setup.CAbsInstaller.load(CAbsInstaller.java:202)
at com.mercury.td.saserver.setup.CAbsInstaller.main(CAbsInstaller.java:914)
at com.mercury.td.saserver.setup.CInstallerWrapper.main(CInstallerWrapper.java:40)



i have no clou.
please help if someone can.
thanks
dan