Cant boot after install, loads mouse, screen keeps flashing

[TuRKo]

I've installed Zephyroth's 10.5.2 with these settings
9.2 kernal
ac97 audio
Nvidia graphics kexts
forcedeth LAN
Nforce
guid + efi

Specs
AMD 3800+
2.5gb ram 667mhz
M2N Mobo
250gb IDE,400gb SATA, 500gb SATA (leopard installed)
geforce 6200tc (256mb)

it installs fine but once it restarts it boots up to the apple logo then the cursur comes up, then the screen just flashes on n off continually. I cant find a way to get past this.
Any help would be greatly appreciated. Thanks

[eddie11c]

you need to boot with -v from darwin or nobody will be able to help you. We need to know what error messages your seeing when the display goes crazy.

[sChLuR]

I has the same problem,

i´m booting with -v -x in savemode, create an account. After restart it boots without problems

[bcw]

I had the same problem. I followed sChLuR's solution, boot with -v -x, then I can start Leopard, and create a new account in savemode. After rebooting, everything works. It's awesome.