Problem installing Leopard on AMD CPU

[instantcrassic]

Hello, I'm french, sorry for my bad english.

I have a computer with an Asus M2N Motherboard, a AMD Athlon 64*2 CPU, a 200gb SATA Hard Disk Drive, a DVD Drive, 4gb DDR2, so I downloaded Leopard-10.5.2-AMD-EFI Rev.2 and burned it, but when the installation is finished, after the reboot, there is a black screen with a white cursor, and I can't do anything. Can you help me for the correct installation please ?

Thanks a lot,
Alexandre