HELP! Frozen mac due to firmware update crash. How do i restart it?

I have had my Tiger 10.4.7 Mac for 4 months, no problems, but when computer done a firmware update, it got part way through and I lost power to computer. Now when I try to turn on all that happens is a black screen with the white power dot on constant. I tried to install the OS X install disc but I cant get that out now as none of the keyboard buttons seem to work. I tried the support phone line, but they just told me to download a firmware patch. I lookedon the site but have no idea which one they suggest to try, and how would I get it to recognise it anyway? Any ideas please?

There is a download for restoring original firmware on the Apple download page, for each computer.
You need to download it, burn it to a CD and follow the instructions.
And never do a firmware upgrade on any computer unless it is on a UPS. Sometimes it is not recoverable and requires factory service to repair.
But I suspect that the restore firmware CD will work for you.
Check this page out:
http://docs.info.apple.com/article.html?artnum=303364
Message was edited by: nerowolfe

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