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POST bootROM failure

Posted on 2003-03-18
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Last Modified: 2013-11-17
Hello,

    when I turn on my PowerBook G3 (Pismo), I get four beeps instead of the usual
startup tone, and then it just sits there. Apparantly this is because of an error
detected during the Power-On Self Test; Apple's site lists it as being a checksum
error for the remaining bootROM.

    I'm guessing that the firmware bootROM code has been corrupted, but I have no way
of determining this or fixing it, as the computer will not run. Can I fix this myself,
or do I have to send it in to Apple for service?

thanks
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Question by:12XU
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Accepted Solution

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SwiftAngel earned 320 total points
ID: 8271876
hmmm you have a serious problem by the way it sounds...Usually i have gotten this error when the whole enchinada is failing at startup.
1)Your Roms have gotten damaged (drop your powerbook lately?)
2)your Ram is corrupted...(this could mean removing your ram and testing each chip to find the boot culprit)
3)Try a different hard drive and use only the bare bones of the system(remove CD drive from slot(if its not built in), remove any outside drives and mouses, and pray)
4)Lastly if your hd firmware is busted then that hard drive should kick the system back into action...
0
 

Expert Comment

by:SwiftAngel
ID: 8293794
hmmm you have a serious problem by the way it sounds...Usually i have gotten this error when the whole enchinada is failing at startup.
1)Your Roms have gotten damaged (drop your powerbook lately?)
2)your Ram is corrupted...(this could mean removing your ram and testing each chip to find the boot culprit)
3)Try a different hard drive and use only the bare bones of the system(remove CD drive from slot(if its not built in), remove any outside drives and mouses, and pray)
4)Lastly if your hd firmware is busted then that hard drive should kick the system back into action...
0
 

Expert Comment

by:SwiftAngel
ID: 8293797
hmmm you have a serious problem by the way it sounds...Usually i have gotten this error when the whole enchinada is failing at startup.
1)Your Roms have gotten damaged (drop your powerbook lately?)
2)your Ram is corrupted...(this could mean removing your ram and testing each chip to find the boot culprit)
3)Try a different hard drive and use only the bare bones of the system(remove CD drive from slot(if its not built in), remove any outside drives and mouses, and pray)
4)Lastly if your hd firmware is busted then that hard drive should kick the system back into action...
0

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