With the computer off, press shift-control-option-power all at once.
Do not press the fn key. Release, wait 5 seconds, and try to restart.
You should also try a complete reset in open firmware. If you get
the open firmware prompt, type "reset-nvram", then press return. You
must include the dash, no quotes. Then type "reset-all" and press
return. The computer should restart at this point.
If you don't get a prompt, just a message, boot and press control-
option-o-f to boot into Open Firmware, then type the above commands.
This works to revive a non-charging battery sometimes, too, as it
should reset the power manager on the battery, too.
If none of this works, I'd guess a firmware problem than may or may
not be correctable without a logic board replacement.
Peter
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
