Hi people
I have a desktop with the following configuration:

Motherboard: Acer MCP73PV
Motherboard Chipset: nVIDIA nForce 7100-630i
CPU: Intel Core 2 Quad Q9300, 2500Mhz
Memory 2x 2Gb DDR2 800
Graphic Card: ATI Radeon HD 4350 (512MB)
Sound Card: Realtek ALC888/1200
HD: Seagate ST375063 (750 GB, 7200RPM, SATA-II)

I already took some distro of Leopard and Snow Leopard to run on Intel PC but whenever I make it run through the DVD it starts but when it appears the 1st image with the Apple symbol, the PC restarts.
What in doing wrong?

Someone can help me I'm anxious to test the Mac OS X