Can't get this Mac to boot

Discussion in 'iMac' started by light316, May 9, 2014.

  1. light316 macrumors newbie

    May 9, 2014
    I had someone give me a G5 iMac (2006) that wouldn't boot. Being unfamiliar with Macs in general I did my research thoroughly. I still have not found a solution. What I am seeing upon booting up is a white screen with a small grey Apple logo. It will stay here until I shut it off.

    I did acquire a copy of the 10.4 OS Tiger from a friend yesterday and tried booting up the disk (by pressing "c"), but all I get is the same white screen with an Apple logo in the middle. I have exhausted many resources, but am not sure I am even looking in the right direction. Any help would be appreciated.
  2. rambo47 macrumors 6502a


    Oct 3, 2010
    Denville, NJ
    Are you sure this particular iMac has a DVD drive? Some only had CD-ROM drives. If this is the case you will need the 10.4 Install CDs instead of the DVD.
  3. light316, May 12, 2014
    Last edited: May 12, 2014

    light316 thread starter macrumors newbie

    May 9, 2014
    That's a great thought. It never even occurred to me. Is there a way for me to figure that out without taking apart the entire unit?

    On second thought.... I remember that when I started the iMac using the option key, I could see the disc in the window on the startup manager and it said "MAC OS X Install Disc" so I assumed that the drive was reading the disc properly?
  4. MacsRgr8 macrumors 604


    Sep 8, 2002
    The Netherlands
    I think you need a Leopard (Mac OS X 10.5) DVD.
    This iMac surely has a DVD drive, probably a SuperDrive even.

    Try to get hold of Mac OS X 10.5 DVD.
  5. light316 thread starter macrumors newbie

    May 9, 2014
    I'm not sure I can, but does it really make a great difference between 10.4 and 10.5? Obviously you can tell you're talking to a Mac newbie. My concern is that the entire Mac seems non-responsive since it refuses to boot from the hard drive or the CD/DVD in any format.
  6. jaxhunter macrumors regular


    Dec 14, 2012
    The G5 iMacs were known to have bad capacitors on their logic boards. I had one with exactly those symptoms and it had 2 blown caps. Unfortunately that was at least a $900 repair at the time and now it will be even worse with a shortage of parts. You can try to locate the bad caps, desolder and replace them, but that can be a very complicated process.

    As far as software is concerned you need a boot disk with at least OS 10.4.2 on it, preferrably 10.4.3.
  7. light316 thread starter macrumors newbie

    May 9, 2014
    Thanks for the response. I was hoping to have something where I could do the repairs myself, but what you are suggesting seems to make the most sense. It seems that the hard drive and CD/DVD drive are intact and I was starting to suspect the logic board. Obviously considering the cost to replace those parts would be a waste considering that I could get a used one in working condition for much less if I so desired. Thanks so much!

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