hp pavilion

http://en.kioskea.net/forum/affich-30646-change-vista-to-xp-in-pavilion-dv-4

imp site
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http://h10025.www1.hp.com/ewfrf/wc/softwareList?lc=en&cc=us&dlc=en&product=500515&lang=en&os=228
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http://h20180.www2.hp.com/apps/Lookup?h_pagetype=s-002&h_client=S-A-R163-1&h_page=hpcom&submit.y=7&submit.x=7&lang=en&cc=us&h_lang=en&h_cc=us&h_query=pavilion+1280&x=0&y=0