Discussion in 'Macintosh Computers' started by jide, Jan 18, 2005.

  1. macrumors newbie

    Jan 18, 2005
    I have a mac G4 running on OS 9.2 and I just installed a Viewsonic
    PF790 monitor.
    I went to control panels to change the monitor resolution, and I
    think I set it too high, because now I can't see anything (monitor is
    black, even after reboot), and it won't set back lower automatically
    like it does on a PC. :confused:
    Do you have any suggestions how to solve this?
    Any help would be very much appreciated.DISPLAY TROUBLE
  2. macrumors regular

    Jan 26, 2004
    Try resetting the PRAM (hold down "command" + "Option" + "P" + "r" keys straight after you power the machine up.

    Keep holding them until you hear a SECOND startup chime, then hold down the "shift" key to continue the boot without extensions being loaded.

    It should boot up in a lower resolution and you can then make adjustments in the control panel.
  3. thread starter macrumors newbie

    Jan 18, 2005
    it worked til a message pop up:
    "Monitors cannot be used because a required extension, System Monitor Plugins, is disabled or not installed"

    I tried to enable the extension folder, but it says changes only applies after restart, which will put me back to the previous situation.
    What should I do?
  4. thread starter macrumors newbie

    Jan 18, 2005
  5. macrumors 6502a


    Apr 16, 2004
    on the sofa
    boot from os X cd

    Try booting from the OS X cd. Trash the monitor preferences.
  6. macrumors 68020


    Jul 22, 2002
    Almere, The Netherlands
    the pref is standard in your system folder. just activate it with the extensionmanager and you are set to go.

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