Boot Failure iMac G3 400MHz, goes on firmware mode :S

Hello everyone,
I recently bought a second hand iMac G3, 400MHz processor and 128mb ram, 10gb harddrive. I've always wanted a Mac just for the fun of it, and i finally got it. I dont think this imac is dead, but i'm having trouble on boot. It is not booting the traditional way, it is going down to firmware boot.
It gives this info:
MacOS: Boot Failure! (0xF3C481F6)
Mac OS: parcel initialization failure - bad checksum
Then i have 2 choices from the firmware for booting or shutting down 1. mac-boot command and 2. shut-down command.
So, i give it the mac-boot command; in starts showing the mac face for a few seconds, then it displays this message below of it:
/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:5,\\:tbxi
after maybe a minute it finally displays the face and ? symbol; typical of not finding the system. Problem is that, even starting the imac with the system disc on it and pressing "c" at bootime, it still goes to the firmware thing...
Is there a way to tell the imac "hey dont boot at firmware, boot at cd!!" ??
Oh, by the way...during the "/pci@f2000000/mac-io@17/ata-4@1f000/disk@0:5,\\:tbxi" message I can still press the "alt" key and it shows me the retry arrow, the system harddrive labeled "Lorelai's comp", the system CD and the straight right arrow.... i try clicking on the harddrive and also on the CD icons to try to boot, but it only refreshes the screen changing from the traditional blue/purple background to a red-ish background and arrow/drive's buttons get funny colors...
i dont know what is going on....i dont think the imac is dead....i guess it has to do with that firmware booting default thing...
please help....
thanks in advance.

Hi again Kenichi,
Question: I've done that procedure yesterday, but i pressed the button for only 1 second 1 TIME ....can i make the procedure again despite if i did it 1 time before? or doing it again will crash the iMac forever?
About the black screen i told you before, here's the thing...if i place a battery on it and reset the nvram via keyboard commands or firmware commands, at the restart then is when the imac goes on black....BUT if i remove the battery, leave it there for a minute or 2, and then power it on, it goes to the firmware state again, ofcourse with good video on it....i dont think it has a video problem...but i dont understand why when making the reset procedures with a battery on the iMac this black-non starting screen keeps going...
Thanks in advance.

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</quote>
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Thanks for any help that may come of this question. I'm not very fluent in the technical nitt gritty of computer hardware/software, but I've been using computers for years and I catch on quick. This goes for the "boot" problem I am getting.
My sytem crashed the other day after the northbridge cooling fan failed. I just finished replacing my northbridge cooling fan with a Vantec Iceberg and I tried to start up the computer. I did have to partially remove the motherboard to do this, so I had to disconnect several cables include the hard drive. I do believe, however, that all cbale s have been properly reconnected. When I power up, I see the color MSI logo pop up, it then appears to start "booting up", or whatever the next process is called. In doing so it gets to a point where it says:
Client Mac Add 00 0C 7615 4C E6
No Boot filename received
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Quote from: swat148 on 19-October-06, 06:10:38
BOS, thanks for the help. The corrective action wasn't quite what you outlined, so hopefully you'll read this and just confirm that my actions were okay. I entered into a screen (forgot how I got there, F8?) that dealt with arrays. What is an arrary and what is the significance? One of the boot messages had mentioned that there was no array defined. So in this screen I defined the 1 array as my hard drive. And that was it. After that the system would load into windows? Was this a correct action to take? Because the BIOS had my HDD0 as the first boot source, but the error still persisted till I defined an array.
Also you asked me what the temp was. I don't know how to locate a temp specific to the northbridge chip. My PCAlert 4 shows a CPU temp of 50C and the system temp is 39C.
Also, in the manual for the motherboard, I noticed a FAQ that said you shouldn't connect a Vantec fan directly to motherboard because it draws to much power. So I connected right the PSU. This however, prevents PCAlert4 from being able to monitor its speed. Is this a problem? Is there a way around it?
Last thing, regarding my post to the fan thread, do you see a problem with the fan only set up on the chip?
Again, thanks for all the help.
"BOS, thanks for the help. The corrective action wasn't quite what you outlined, so hopefully you'll read this and just confirm that my actions were okay. I entered into a screen (forgot how I got there, F8?) that dealt with arrays. What is an arrary and what is the significance? One of the boot messages had mentioned that there was no array defined."
yep thats other possiblities, for some reason your fastrack was lost array and need to be reconfigured. after seening the message: "No array defined" you should press "CTRL+F" to entire in a utility and to re-setuped like you already do. you have done correct.as boot priority HDD0 or SCSI.
"What is an arrary and what is the significance?"
SATA disk on your mainboard will be recognised only when its defined in array via Onboard Promise Controller.
"Also you asked me what the temp was. I don't know how to locate a temp specific to the northbridge chip. My PCAlert 4 shows a CPU temp of 50C and the system temp is 39C."
you can use Everest to observe it: (https://forum-en.msi.com/index.php?topic=100852.0) Example:
"Also, in the manual for the motherboard, I noticed a FAQ that said you shouldn't connect a Vantec fan directly to motherboard because it draws to much power. So I connected right the PSU. This however, prevents PCAlert4 from being able to monitor its speed. Is this a problem? Is there a way around it?"
that is the correct way. no FAN RPM monitoring is not problem. you have done best.
"Last thing, regarding my post to the fan thread, do you see a problem with the fan only set up on the chip?
Again, thanks for all the help."
nope should be fine if NB temp remain acceptable, if temeperature is normal. but with other copper vantec base should be lowest. basicly if your NB temp is good/low there is nothink to worry.
you are welcome mate.

2.2 macbookpro boot failure

Any suggestions? This am had 2.2 macbookpro boot failure, no tone, screen flashes, goes grey, faint fan noise. Just installed Sibelius 5.0. Running MacOS 10.7. up to date. This machine had been getting slow, but we are on DSL..

Howdy,
I'm guessing from the version number that you mention that you're running a 64-bit OS. The older BIOS versions are at the bottom of this page:
http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS029246
I haven't had occasion to try a downgrade so I'm not sure if the installer will fuss about that.
[edit] Re-read the notes and that link is for both 32 and 64 bit operating systems. Here's the bootable CD link if you prefer that method:
http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS029249
Z.
The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Boot failure - white screen corrupted with yellow repeated bit-pattern.

Hi
I have had a quick look at the postings esp those with pictures and can't find a similar prob to mine. My white 24" iMac hasn't been able to boot for months now, except a couple of times but it then subsequently started playing up. As well as a boot failure the white boot screen has yellow bit-patterns on it, usually horizontal or speckled. I have been able to run the diagnostics program from the OSX disc but it didn't find any problems. The computer displays and animates the spinning wheel while booting, but overlaid on the corrupted white screen, and then 99% of time gets no further.
I have made 5 screenshots with my 3G iPhone, the first two are of one boot attempt, the third is another boot attempt (note slightly different bit pattern - this one is the most common I get) and last two are of a successful boot attempt into AHT (Apple Hardware Test). If anyone recognizes this type of screen problem please do reply.
Standard boot attempt (1) - two photos showing spinning wheel:
https://files.me.com/funkypuck/e0nt8c
https://files.me.com/funkypuck/nts1nu
Standard boot attempt (2) - one photo showing typical screen corruption:
https://files.me.com/funkypuck/izjv0e
Boot into Apple Hardware Test - two photos of same area (just because 3G camera not so hot):
https://files.me.com/funkypuck/q64kgt
https://files.me.com/funkypuck/e72fkd
Many thanks

Hi, I am having a similar problem from what you described, but I can't even get the disk up and running for a clean install with Snow Leopard. I'm curious if you have found a solution. I fairly certain that it is not an issue with the hard drive.

Boot Failure iMac G3 400MHz, goes on firmware mode :S

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