[PVE-User] Black screen instead of installer

[Marc Aymerich]

Hi all!
I'm trying to install proxmox in a SunFire X4100 (AMD optheron 256).
Unfortunately the installer doesn't boot, I get a black screen just
after I hit the enter key in order to boot the installer (when appears
the Proxmox header).

Any idea?

Thanks!

-- 
Marc