Reboot every time loading Kernel

[DennisNL]

Hi all.

I used many OSX86 Leopard systems, but when it needs to load the kernel, it reboots my pc.
At Tiger, I do not have any problem, but when I want to install Leopard, there the problems begin..

My specs:
Processor: AMD Sempron (tm) 2800+ Mhz Motherboard: VIA K8M800 Memory: 1024MB + 256MB Kingston Video: ATI Radeon 9550SE 512 MB AGP Chipsets: Northbridge: VIA K8M400 (VT8380) rev. 00 Southbridge: VIA VT8237 rev. 00
BIOS: Phoenix 6.0

I tried iATKOS, iDeneb, and all of these, but nothing helps. I even tried -x -f -v and -legacy. Can someone give me a solution?
I just took a clip of it:
http://www.youtube.com/watch?v=YjAUugTbSM8