>I few weeks ago I wiped my laptop & reinstalled Windows XP Pro. Prior to this, I had SQL 2005 on my laptop.
>
>Today I'm trying to reinstall SQL 2005 and in the System Configuration Check I see the warning:
>
>

>Some components of this edition of SQL Server are not supported on this operating system. 
>For details, see 'Hardware and Software Requirements for Installing SQL Server 2005' in Microsoft 
>SQL Server Books Online.
>

>
>If I continue the installation, the SQL Server Data Services checkbox and other options are all disabled.
>
>I don't understand why this isn't working. I had it installed before, so how can it not be supported now??
>
>Help!!

In addition to what Viv and Tim have already said, be sure your laptop has a login password. SQL Server 2005 wants one.