Install XP on Dell Vista PC

Hi,

My friend brought a Dell PC with Vista then decided to return to XP
due to hardware compatibility issues.


He had a Dell XP install CD from an old laptop that's now broken.


Using this old Dell CD he tried installing XP on Vista, the installer
copied all the files to the hard disk but fails to initialize Windows
XP, the message on the blue screen says "check your disk, it may be
corrupted or infected with virus".


This PC came with 30 day free antivirus which did not detect any
viruses, so this message is very strange.


Appreciate any suggestions on how to solve this problem and get a
clean install...


Thanks.