powerbook boots to apple logo and spinning circle then stops

Discussion in 'PowerPC Macs' started by mjh1972, Jul 23, 2009.

  1. mjh1972 macrumors newbie

    Jul 22, 2009
    My powerbook G4 boots starts with the apple logo the spinning circle then stops goes to a gray screen with 4 or 5 intermittent broken lines horizontally across the screen. Does anyone know of the issue that makes this happen on this Mac?

    Thanks for your help.
  2. geoffreak macrumors 68020


    Feb 8, 2008
    It is either a hard drive failure or a logic board failure. You can eliminate a hard drive failure as a possibility if you put your Mac in Target Disk Mode so that another Mac can read its HDD.
    This is likely a logic board failure as normally a question mark appears when the hard drive can't be booted off.
  3. mjh1972 thread starter macrumors newbie

    Jul 22, 2009
    Logic board issue

    Any more in depth Help on the logic board issue?

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