help with an asus p5q board

[tribi]

hi i've been trying to install tiger & leopard on my computer i have a p5q asus motherboard / a sparkle nvidia 8500 gt video card & 4 gigs of ram but none of the os wil install on the system, i've tryied mac 10.4.8 & it just restart when try kalyway at the end it says mac os not yet set if i try -v -x at the end of all the process it'll say waiting for root device can some help me please