I am unable to get pass the first apple logo ( the grey screen right after "Loading Darwin") ,it flashes for a split second then my PC just reboot.
My hardware:

Asus M4A78-E latest official bios ver. ( Chipset AMD 790GX, Storage chipset SB750, Audio VIA VT1708S, Lan Atheros L1E)
CPU : Phenom II X4 955 BE
RAM 4 x 1G G.Skill 800Mhz

I am trying to install to a single SATA drive, tried to set to both AHCI and IDE, same thing. Also I unlock all 4 cores

Distro I tried ( All burned onto DVD)

Kalyway 10.5.2
iPC 10.5.6 Universal Final PPF5
iDeneb 10.5.8 Lite
xXx 10.5.6
iDeneb v5 10.5.7
Iatkos V7 10.5.
10.5.6 Hackintosh AMD
Snow Leopard 10.6.2 Intel AMD Made by Hazard
Snow Leopard 10.6.2 Intel AMD Made by Hazard with PPF # 2 for AMD
ALL to same result above.

May be it s the mainboard, or may be it has something to do with the Phenom II X4

Can some one please kindly point me to some direction? I really dont want to give up.Thanks

anyone can help please??