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My Mac died last week and neither I nor IT have been able to resurrect it. It is a Dual 2.3 G5 with 10.4.11 installed. I got a kernel panic and the fans ran up to full speed and stayed there while I went to lunch. It sounded like a jet taxiing on the runway.

I can not get any boot options on the system. No safe boot or target mode. The Startup Manager just shows a lock, what looks like a password entry field and an arrow. I try to enter known passwords, but no luck. I can get the Open Firmware screen, but know nothing about it.

Anyone have any ideas on this one?

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Last Post by sprale
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The G% is in panic mode, thinks there is an on board failure. Fans will run full speed to keep it cool as a precaution. Try removing things one at a time. PCI cards, ram or anything connected that may have failed. I removed a USB card to solve a similar problem on mine. Also if you get it to boot, turn off any sleep mode until you have positively tracked the fault down.

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Got it! Open Firmware Password was enabled on this Mac, locking out boot options (even resetting the PRAM!). I disabled it by changing the amount of installed memory and then resetting the PRAM. Good to go!

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