iMac G3 233 Freezing

Discussion in 'PowerPC Macs' started by Coolnat2004, Jul 21, 2006.

  1. Coolnat2004 macrumors 6502


    Jan 12, 2005
    Alright... I've been trying to solve this myself for several days now.. but maybe some of you wonderful people can help me!

    I have an old iMac Rev A (or B?) and it is constantly freezing. It freezes in OS 8, 9, and 10.3.. but most frustrating is that it also freezes while trying to install an OS.. so right now it does not have an OS installed because of that.

    It will not boot up to my OS 9.1 disc.. but it will boot up to it's original 8.5 disc and a 10.3 disc.. However it always freezes near the beginning of the install process (often before it even writes to the HDD).

    I tried taking out the old RAM and leaving it with just the one (new) 256MB chip.. and that didn't work. It was freezing before with only the old RAM so.. I guess it's not the RAM.

    I have an identical iMac that doesn't choke on anything (never freezes) and it only has 96MB of RAM.

    I don't know what else I can do. I'm trying to use XPostFacto to put 10.4 on this thing (it's possible, I want to try it out at least) but it won't get through the first OS install and if it does, it won't get through the second (10.4).

    Even more frustrating is that I don't have any diagnostic software such as the Apple Hardware Test because the original iMac didn't come with any.

    If anyone can offer ANY suggestions at all, I highly appreciate it! Thank you!!
  2. nickelbackmac macrumors regular


    Jun 23, 2006
    Jonesboro, Arkansas USA

    Check Apple's support site:

    Hope it helps!
  3. Coolnat2004 thread starter macrumors 6502


    Jan 12, 2005
    Thanks, but I've been all over there looking for an answer (as well as Google) but there's nothing that has helped.
  4. 4JNA macrumors 68000


    Feb 8, 2006
    looking for trash files
    build pc's for a living. usually hard drive or memory. you already swapped/changed memory. anything else to test the memory in? do you have one of the apple hardware test discs to run the advanced memory test with?

    i would wager a $1 bet on a failing hard drive. few bad sectors, or failing bearings causing alignment problems. would cause the random crash/freeze, and due to random read/write, would happen at different times. may or may not be picked up by the disk utility. that is disk utility might tell you the drive is fine, when it's not. just my 2 cents.
  5. Coolnat2004 thread starter macrumors 6502


    Jan 12, 2005
    The AHT won't run on the iMac.. it says unsupported machine or whatever..

    Is there a way to check for these HDD issues on a PC or something? I don't have a hard drive around to swap into the iMac.. so..

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