Microsoft SQL Server 2005 Cannot Install On Vista, Problem With 'sa' Login

Hi

I have just installed Vista on my computer and now has problems with installing: Microsoft sql server 2005. In the last part during the installation the following error occurs:

"SQL Server Setup could not connect to database service for server configuration..... Login failed for user 'sa'....,"

What is wrong? Why cant I install? Thank you for your help.

Here are more details from log:

SQL service MSSQL$SQLEXPRESS started successfully waiting for SQL service to accept client connections
Service MSSQL$SQLEXPRESS started at Sun Feb 03 09:01:52 2008
SQL_ERROR (-1) in OdbcConnection::connect
sqlstate=28000, level=-1, state=-1, native_error=18456, msg=[Microsoft][SQL Native Client][SQL Server]Login failed for user 'sa'.
Error Code: 0x80074818 (18456)
Windows Error Text: Source File Name: libodbc_connection.cpp
Compiler Timestamp: Wed Jun 14 16:28:15 2006
Function Name: OdbcConnection::connect@connect
Source Line Number: 148

---- Context -----------------------------------------------

Connecting to SQL Server
ExecuteSqlCommands
Originial error was 80074818 (18456)
ipt
SqlScriptHlpr

Error Code: 18456
MSI (s) (04!E8) [09:02:52:245]: Product: Microsoft SQL Server 2005 Express Edition -- Error 29515. SQL Server Setup could not connect to the database service for server configuration. The error was: [Microsoft][SQL Native Client][SQL Server]Login failed for user 'sa'. Refer to server error logs and setup logs for more information. For details on how to view setup logs, see "How to View Setup Log Files" in SQL Server Books Online.
Error 29515. SQL Server Setup could not connect to the database service for server configuration. The error was: [Microsoft][SQL Native Client][SQL Server]Login failed for user 'sa'. Refer to server error logs and setup logs for more information. For details on how to view setup logs, see "How to View Setup Log Files" in SQL Server Books Online.
<Func Name='GetCAContext'>
<EndFunc Name='GetCAContext' Return='T' GetLastError='203'>
Doing Action: Do_sqlScript
PerfTime Start: Do_sqlScript : Sun Feb 03 09:02:52 2008
Service MSSQL$SQLEXPRESS with parameters '-m SqlSetup -Q -qDanish_Norwegian_CI_AS -T4022 -T3659 -T3610 -T4010' is being started at Sun Feb 03 09:02:52 2008
Attempt to start service when it is already running
SQL service MSSQL$SQLEXPRESS started successfully waiting for SQL service to accept client connections
Service MSSQL$SQLEXPRESS started at Sun Feb 03 09:02:52 2008
SQL_ERROR (-1) in OdbcConnection::connect
sqlstate=28000, level=-1, state=-1, native_error=18456, msg=[Microsoft][SQL Native Client][SQL Server]Login failed for user 'sa'.
Error Code: 0x80074818 (18456)
Windows Error Text: Source File Name: libodbc_connection.cpp
Compiler Timestamp: Wed Jun 14 16:28:15 2006
Function Name: OdbcConnection::connect@connect
Source Line Number: 148