Installation Rules Setup is running rules to determine if the installation process

Hi there,
I ran a clean install of SharePoint Enterprise on my Windows XP SP1 and I think I’ve missed some important steps that caused this failure. Does anyone have a solution for this failure ? What did I miss and how can I repair it ?
Thank you !

Installation Rules
Setup is running rules to determine if the installation process will be blocked. For more information, click Help
SharePoint version requirement for PowerPivot for SharePoint-Failed
