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Sun E420R with Solaris 2.8 getting start up problem

I am using a Sun E420R Server with Solaris 2.8. I restarted the server because its console was not getting connected but once I restartde it its not getting start up. It is showing just the bleow message in the console and then showing nothing. Can some please help me, it is very very urgent... Message on the console: "Sun Enterprise 420R (2 X UltraSPARC-II 450MHz), No Keyboard OpenBoot 3.29, 1024 MB memory installed, Serial #15275611. Ethernet address 8:0:20:e9:16:5b, Host ID: 80e9165b."

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