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G5 won't start up.

1080 Views 13 Replies Latest reply: May 29, 2012 5:24 AM by jim18 RSS
jim18 Calculating status...
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May 25, 2012 10:51 AM

Whan I attempt to start my G5 running 10.5, I get the message: "You need to restart your computer. Hold down the Power button for several seconds or press the Restart button." This occurs about halfway thru the startup process. I tried to start up with a system 10.4 system install disc, but it quits about halfway thru startup.

PowerMac, Mac OS X (10.4.11)
  • BDAqua Level 10 Level 10 (114,765 points)
    Currently Being Moderated
    May 25, 2012 11:55 AM (in response to jim18)

    Hi Jim,

     

    Have you blown the dust out of it lately?

     

    Does anything show if you hold the Option/alt key at bootup?

     

    Does it boot to Single User Mode, CMD+s keys at bootup, if so try...

     

    /sbin/fsck -fy

     

    Repeat until it shows no errors fixed.

     

    (Space between fsck AND -fy important).

     

    Resolve startup issues and perform disk maintenance with Disk Utility and fsck...

     

    http://docs.info.apple.com/article.html?artnum=106214

  • BDAqua Level 10 Level 10 (114,765 points)
    Currently Being Moderated
    May 25, 2012 2:16 PM (in response to jim18)

    How about the Dust issue? Looked at the RAM area?

  • BDAqua Level 10 Level 10 (114,765 points)
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    May 26, 2012 9:57 AM (in response to jim18)

    Pull the Data cable from the Hard Drive(s) & see if it boots from the Install Disc.

  • Henry G4 Level 4 Level 4 (1,865 points)
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    May 26, 2012 8:27 PM (in response to jim18)

    Hi.

     

    What kind of G5 is it? A PowerMac G5 or an iMac G5? Both of these machimes haven't just got the best reliability records of the last decade Macs… The water-cooled PowerMac G5 uses to suffer from coolant leaks, and some of them (as the Quad G5 series) have power supply issues, and the iMac G5 had a well known electrolytic capacitor issue, both on the "midplane assembly board" (logic board) and the PSU.

     

    All of these problems are now increased by the effect of time, electrolytic capacitors are electrochemical devices, and their performance decrease over time, even if you do not use them, as a matter of fact, specially if you do not use them, as the electrolytic capacitors have a "suggested" shelf life.

  • BDAqua Level 10 Level 10 (114,765 points)
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    May 26, 2012 8:31 PM (in response to Henry G4)

    Hey Henry G4, long time no see, hope all is well!

  • Henry G4 Level 4 Level 4 (1,865 points)
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    May 26, 2012 8:48 PM (in response to BDAqua)

    Hey, All is well, thank you! Hope you're fine too. Long time out of the forum, one of the things that happen when you're back to school !!!

  • BDAqua Level 10 Level 10 (114,765 points)
    Currently Being Moderated
    May 26, 2012 9:29 PM (in response to Henry G4)

  • BDAqua Level 10 Level 10 (114,765 points)
    Currently Being Moderated
    May 28, 2012 10:37 AM (in response to jim18)

    Yep, good work, sounds like you found the problem.

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