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iMac 333 on deathbed...
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Posting Junkie
Join Date: Nov 1999
Location: Cape Cod, MA
Status:
Offline
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The family friend I sold my old iMac to just called me up and said that after a power failure the iMac would not boot.
Simply just blinked the "cannot find system folder" icon. I told him to zap the pram, that didn't work, then I told him to boot off the cd that came with the iMac. It gets to the welcome to MacOS startup screen but then a bomb syetm error appears that says "address failure."
Nothing seems to work and I am thinking that something inside got screwed, maybe the RAM or something...
any ideas?
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Mac Enthusiast
Join Date: May 2001
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Offline
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Address errors are related to memory.
Open up the mac. Find the CUDA key, a small black and silver button that should be located near the PRAM battery on the Logic Board. Hold it down for 30 seconds. Reassemble the unit.
Boot into open firmware by holding apple + opt + O + F at startup. You will enter into a command prompt. Then enter these three lines, following each by hitting the return key.
reset-nvram
reset-all
mac-boot
The unit will now reboot, and the issue should be resolved.
(Last edited by gto47; Apr 5, 2003 at 03:40 PM.
)
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Mac Pro 8x2.8 | Macbook 2.13 | Saab Trionic 7 (thats right, runs on a 68k!)
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Banned
Join Date: Mar 2003
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Boosh. iMacs rule. 
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Addicted to MacNN
Join Date: Mar 2002
Location: Winnipeg
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Originally posted by gto47:
Address errors are related to memory.
Open up the mac. Find the CUDA key, a small black and silver button that should be located near the PRAM battery on the Logic Board. Hold it down for 30 seconds. Reassemble the unit.
Boot into open firmware by holding + opt + O + F at startup. You will enter into a command prompt. Then enter these three lines, following each by hitting the return key.
reset-nvram
reset-all
mac-boot
The unit will now reboot, and the issue should be resolved.
This is the most impressive post I've read in a long time 
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Senior User
Join Date: Dec 2002
Location: Portland, OR
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Offline
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Wow
/me does the "I'm not worthy.."
As the owner of a RevA it's good to see this kind of info
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iMac - C2D, 2.8Ghz, 4GB, 320GB
MacBook - C2D, 2.4Ghz Uni, 4GB, 500GB
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Moderator  Join Date: Apr 2001
Location: Up In The Air
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I would also have advised removing the RAM, and booting with one module at a time.
Power failures are not kind to sensitive electronics, and RAM can fail. Best to see if the RAM is okay, one module at a time.
To remove the bottom RAM module in an early iMac, unclip the heatsink.
Use the small hook end of the heatsink clip to lift the back right edge of the processor card. There's a hole there, so hook under that hole where you can't do any damage.
Pull up. Turn the processor card over and remove the bottom ram module.
To replace, insert the processor card's tabs into the metal cage's slots and then push down firmly on the back edge to reseat the connector.
replace the heatsink and heatsink clip and reassemble the iMac.
(note, you do not need to remove the metal cage. You do need to have some ram installed in the processor card, macs don't boot without ram.)
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If this post is in the Lounge forum, it is likely to be my own opinion, and not representative of the position of MacNN.com.
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