Question about Apple iBook G4 Mac Notebook

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Ibook display problem

One day, I booted up my iBook and got a weird display of lines across the upper portion of the screen. When I first boot up, I hear the familiar startup sound. However, then the screen lights up but with only the very top part being a dark gray color, then a series of lines, then a relly dark black area, and finally a much lighter blue area.
One more thing, there is a cursor displaying in the dark upper portion of the screen, and I can move the cursor arrow in that gray area. But when I try to move it beyond the lines, it will not go any lower than the series of lines. I am suspecting that because I can see the cursor arrow, this means that the computer is not the issue and that I might possibly need to replace the screen. Any other suggestions?

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  • bastida1 Oct 12, 2009

    Thanks, but this did nothing to fix the problem. I strongly suspect that the ibook might have ben dropped, but cannot prove this to be the case. When I power the computer on, I get the chime sound, then I get a display that is two different shades of gray with some lines in the middle of the screen. There is a cursor arrow on the upper part of the screen above the lines. I can move that cursor arrow around the upper part of the screen. But when I try to move the cursor arrow past the lines, it will not go beyond the lines to the lower part of the screen.



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You can reset the pmu this might help to stable the display,this is only used as a last resort and not a possible solution.

  1. If the computer is on, turn it off.
  2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
  3. Wait 5 seconds.
  4. Press the Power button to restart the iBook computer.

Posted on Oct 07, 2009


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