Installing SQL 2005 Express SP3 on WinXP SP3 clients using this command

Start /wait SQLEXPR32.EXE -q /norebootchk reboot=reallysuppress /settings
"c:\...\mvws.ini" /qn

experienced failures to some XP clients despite they meet the
hardware/software pre-requisites in

http://msdn.microsoft.com/en-us/libr...0(SQL.90).aspx

The failure symptom being the installation stopped after 3 or 4 minutes when
only MSSQL Server Management Studio Express, Native Client and Setup Support
Files (English) components were installed but *NO* SQL instance

There are no obvious event log messages that point to whether the sql
installation is waiting for something. Also, there are no error pop-ups or
obvious error IDs/warnings/messages within the sql logs under c:\program
files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files.

The SUMMARY.TXT file fro an failed install contained only

Microsoft SQL Server 2005 9.00.4035.00
==============================
OS Version : Microsoft Windows XP Professional Service Pack 3 (Build
2600)
Time : Thu Oct 29 17:41:10 2009

while a successful installation on other XP clients would show other
installed components

Product: Microsoft SQL Server Setup Support Files (English)
Product: Microsoft SQL Server Native Client
Product: Microsoft SQL Server VSS Writer
Product: Microsoft SQL Server Setup Support Files (English)
Product: Microsoft SQL Server Native Client
Product: Microsoft SQL Server 2005 Express Edition
Product: Microsoft SQL Server 2005 Tools Express Edition

Thanks for any troubleshooting help

Hong