It may have to be to load properly.
Specifications
Laptop: Lenovo 3000 N100 0768-A52, Vista-Preload
HD: SATA 120gb, 5400rpm
ROM: DVDRW/CDRW
Memory: 1gb ram
Intel 950m
I need help downgrading vista to xp pro for Lenovo laptop. I used Dban to clean sweep the hard drive, then put in my original xp pro (not recovery cd) to load windows setup. After all the drivers are loaded, it's suppose to take me to the partition section of the blue screen but before that happens, it took me to an error blue screen where the cause of the problem is this file "pci.sys". I am assuming this is either the drivers for the intel chipsets or the sata hd. I cannot find any sata drivers at the Lenovo site, but only the chipset drivers. I used Nlite to integrate the chipset drivers to the customized xp pro but the error still occurred. I am running out of option here. I still my have vista recovery cds, and I am WILLING to use vista, IF only it doesn't hang everytime I try to shutdown or load vista. Trust me, it happens every time. I am still not sure if it is still the chipset drivers or the sata drivers, or both. But my question is how to downgrade it back to xp?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic