Post your configuration...
Make sure there are no brass standoffs hitting the mobo and shorting it out..I have this mobo and when I first installed there were 2 standoffs hitting the board that shorted...
Also make sure the cpu and ram are well seated in the board....
Try only video card, memory and cpu to see if it will post and you can enter the bios..if that goes well add your other cards..
Also
AGP
PCI 2
PCI 4 & 6 should be used for cards...PCI 1 and AGP share/PCI 2&3 share/PCI 5 shares with the HPT372 raid/IDE controller/PCI4&6 share with usb and serial
I would recommend leaving PCI 1, 3,5 open..also if you do not use parallel port and serial ports disable them in the bios to avoid IRQ conflicts...
If you are not using the HPT controller you can populate PCI slot 5 with no IRQ worries...