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I have an old Mac G4 computer which is occasionally will not boot. It acts like the hard disk does not start spinning. The specs for the computer follow: Hardware Overview: Machine Name: iMac Machine Model: PowerMac4,2 CPU Type: PowerPC G4 (2.1) Number Of CPUs: 1 CPU Speed: 700 MHz L2 Cache (per CPU): 256 KB Memory: 640 MB Bus Speed: 100 MHz Boot ROM Version: 4.4.0f1 Serial Number: QT21701CMHJ AirPort Card Information: Wireless Card Type: AirPort Wireless Card Locale: USA Wireless Card Firmware Version: 9.52 Current Wireless Network: linksys Wireless Channel: 6 System Software Overview: System Version: Mac OS X 10.4.11 (8S165) Kernel Version: Darwin 8.11.0 Boot Volume: Macintosh HD Computer Name: Robert User Name: Robert Wood (robertwood) ATA Bus: Maxtor 4D040H2: Capacity: 38.16 GB Model: Maxtor 4D040H2 Revision: DAK019K0 Serial Number: D24VL6FE Removable Media: No Detachable Drive: No BSD Name: disk0 Protocol: ATA Unit Number: 0 Socket Type: Internal OS9 Drivers: Yes S.M.A.R.T. status: Verified Volumes: Macintosh HD: Capacity: 38.16 GB Available: 9.93 GB Writable: Yes File System: Journaled HFS+ BSD Name: disk0s9 Mount Point: / SONY CD-RW CRX170E: Model: SONY CD-RW CRX170E Revision: 2.3d Detachable Drive: No Protocol: ATAPI Unit Number: 1 Socket Type: Internal Any suggestions on what action I should take - troubleshooting and/or preventive? Thanks! Robert Wood

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  • Robert H Wood May 01, 2010

    Is it possible to get access to a manual online to guide me in replacing the hard disc?

    Is there a market for used or rebuilt hard discs for this machine. If so how to I access them.

    Thanks for your excellent assistance.

    Robert Wood

  • Robert H Wood May 03, 2010

    It was helpful.



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Hi! Please take a good look at the motherboard for any blown capacitors. If there are blown capacitors, the computer may not work properly or it may work but cannot perform well and most likely will shut down. This may be the reason why the hard drive stops spinning. But if ever the capacitors are all good and no sign of leakage then you can start replacing the hard drive for i believe that its going to die any time soon. Hope this helps and have a good one!

Posted on Apr 29, 2010

  • dj_relly999
    dj_relly999 May 01, 2010

    Hi! Yes there are aftermarket hard disks that you can buy and use for replacement. Good luck!



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