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  1. #1
    800Mhz 17" G4 iMac keeps freezing.
    We bought a used 800mhz 17" G4 iMac a few weeks ago, and we put in an extra 512mb of ram in it. This 512mb chip came out of a 15" iMac G4 that was functioning perfectly.

    So, we start it up and after hours of painstaking procedures of erasing and fixing the hard drive, we finally manage to install tiger and boot it up. Great.

    Now the computer seems to work, however the other day we tried to watch a movie and it froze about 20 minutes into it and gave us that "You need to restart your computer" screen.

    So, it can't watch movies. We've tried many times, it keeps giving us that. We've zapped P-Ram, repaired permissions, etc.

    So, we said, nevermind, we won't watch movies on it.

    But it still freezes even while surfing the internet.

    Last night my dad was using it, and black lines of text came over the screen....

    I typed up the beginning and the end of it.

    This is what it said:

    Exception state (sv=0x2DB4AC80)
    PC=0x000A34E4; MSR=0x40001000; DAR=0x17F80FC4; DSISR=0x42000000; LR=0x0009E8D4; R1=0x17F80480; XCP=0x00000008 (0x200 - Machine check)

    After the backtrace, which was 20 or 30 lines of similar code.... it said:

    Kernel version:
    Darwin Kernel Version 8.7.0: Fri May 26 15:20:53 PDT 2006; root:xnu-792.6.76.obj~1/RELEASE_PPC
    Memory access exception (1,0,0)
    ethernet MAC address: 00:03:93:d7:d4:ee
    ip address:

    Waiting for remote debugger connection.
    Machine check (0) - uncorrected - pc = 00000000000B3158, msr = 0000000040001030, dsisr = 40000000, dar = 00000000DFBA6000Machine check (0) - uncorrected - pc = 00000000000CCA18, ms

    Any help would be appreciated.

  2. #2

    Alexis's Avatar
    Member Since
    Apr 20, 2006
    Al iMac 20" 2.4Ghz Intel Core 2 Duo
    Try taking out the memory you put in. Maybe static zapped it whilst you were transferring it, or your new Mac just doesn't like the new memory.

  3. #3

    deus_ex_machina's Avatar
    Member Since
    Aug 06, 2004
    2GHz Mac Mini 2GB RAM 160GB 10.6.2 | MDD DP 1.25GHz G4 1.5GB RAM 10.4.11 | 233MHz iMac G3 10.3.9
    that's a kernel panic - check your memory; that's what causes it 9 times out of 10

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