Prolly the mainboard is a HP custom one...have a look here:
Maintenance and Service Guide HP Pavilion dv5000 Notebook PC:
http://h10032.www1.hp.com/ctg/Manual/c00700959.pdf
http://h10025.www1.hp.com/ewfrf/wc/prod ... g=de&cc=ch
btw. Google is your friend
Graphics problem
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