Swirly Blue screen on a PBG4

Discussion in 'MacBook Pro' started by dorthyinoz, Mar 20, 2007.

  1. dorthyinoz macrumors member

    Oct 19, 2006
    My sister was recently given a powerbook G4 laptop with some problems. The screen doesn't work, but we have an extra monitor so that shouldn't be a problem. Using the screen adaptor, when booting the powerbook and closing the lip all she is given on the screen is a swirly blue screen. Anyone have any advice on how to get it working so it can be used as a computer? Its previous owner was able to get it to work no problem with an extra monitor....so what are we doing wrong?
  2. 840quadra Moderator


    Staff Member

    Feb 1, 2005
    Twin Cities Minnesota
    What monitor is it? Does it support all the resolutions that the powerbook is able to output?

    Have you tried booting the system with the lid closed to see if anything comes out clear from this monitor ?

    Sorry for all the questions :eek:
  3. Freyqq macrumors 68040

    Dec 13, 2004
    my guess is that your plugging it in via VGA for instance but the monitor is on DVI. Make sure its on the right mode.
  4. MaaseyRacer macrumors regular

    Oct 30, 2005
    San Francisco, Ca.
    Try booting off a CD, if that works, then reinstall the system software. Otherwise it is probably logicboard/video failure.
  5. dorthyinoz thread starter macrumors member

    Oct 19, 2006
    its an older monitor and she bought some adapter for it...so maybe that has something to do with it?

    How do I boot without opening the screen?

    any other suggestions would be great. She can get the mouse to move but there is nothing on the screen
  6. kinchee87 macrumors regular


    Jan 9, 2007
    New Zealand
    Doesn't that suggest you are using the external monitor as an extension to your primary display (the display of the powerbook)?
  7. phidauex macrumors member

    Feb 26, 2007
    What is happening is that the PB is using the external monitor as the extended display, instead of the main display.

    Try this... Plug in the monitor, and an external mouse and apple keyboard. Leave the lid closed and start with the power button on the keyboard. That should force it to use the external monitor as the primary display. I think.

    But it is worth a try, its what I would do next.


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