command sys-unconfig

I have solaris 10 running on sunfire v250. For the configuration

of the server on my local network, i have used the command

sys-unconfig. At reboot, the lines

select a language

0 English

1 German

2 fr

please make a choice (0-2), ...:

appear

But the keyboard no response. Ii can't enter any choice.

At the boot, i want to open the openboot but there no response from

the keyboard too.

I am looking for solution of this problem

How can I boot from a cdrom with this problem?

thank

[687 byte] By [jandro] at [2007-11-25 22:43:26]