Cannot install the 64bit versions

Dear all,

I tried to install on an Armari Gravistar machine Open Suse 11.3 and 11.2 at 64 bit but both haven’t worked, after the welcome I press install, it loads something and then the computer is on the screen black and nothing happens. The 11.3 at 32 bit installs but in this manner I cannot use the 16GB RAM of the machine.
Do you have any suggestion, please?

Thank you very much

p.s. I am trying to install the OS on a new hard drive

Have you done this
Maybe you need to try some options:

32bit will support more RAM if you use kernel-pae (I think kernel-desktop has pae support too)