Darkoil :
The local computer shop are talking out of their arse, it should work just fine. What happens exactly when the card is plugged in, does the computer turn on but you don't get a display? It may still be running on the intergrated GPU so you could try switching them in the bios.
Blue HP screen then black with no text. when PC world tried they got a few lines of text on black screen then it froze.
Computer shop say they tried a card from older computer (pci express x16 generation 1)& it worked & the Quadro worked in the older computer (my PC is 7 months old)
Think they mentioned someting about reconfiguring the bios - what should they do ?.
Computer shop say solution is to fit Asus P8H77-M mother board but this will require a new copy of windows 7 OEM - getting expensive !
Computer world tried the card in a Advent DT2111 & it seemed to load but it would not load in a higher spec HP
I need the Quaro for 10 bit colour through a display port for pro grade monitor for photography not gaming
Regards,