FIREWIRE CARD WINDOWS 10?

[tomrip]

hello all i really need help. i have a machine that i upgraded to windows 10 64 bit and everythign worked flawlessly. i bought a ibuypoowermachine that has windoes 10 64 bit, and it will not detect any fire wire card. its an i9 with 64 gigs of ram. i have 4 firestudio projects, and dont have money to upgrade to thunderbolt as computer with the 3 monitor astand has set me back. i have tried grabbing legacy drivers. no mattert what i do or what card or what port, it will not detect firewire at all. BOTH CARDS ARE PCIEXPRESS .does anyone have any suggestions?