Power Mac G5 won't boot & loud fans
Hi all,
My husband's Power Mac G5 won't boot properly -- it hangs on the grey Apple screen, after which the fans in the unit come on really loudly, and the unit eventually shuts itself off.
We've cleaned out the unit, all the vents, and checked the fans -- they seem to be working properly. Opening the case while the computer is on shuts one of the fans off, but the others are still really loud.
We took it to a Mac store, which diagnosed a hard drive issue and suggested data recovery and an installation of a new hard drive for $500. We are really broke at the moment and cannot afford something like this. So we've bought a new hard drive and are going to see if that solves any issues.
When we got the machine back from the store, I booted the machine from the install disk (holding down "C" while the machine booted), and got a boot from the hard drive instead. No "install" screen showed up. Tried a re-start while holding down "C" and the same thing happened.
I tried to run disk utility from the install disk, but the "repair disk" option was greyed out. I ran "repair disk permissions" anyway, and tried to restart in safe mode, which resulted in a panic kernel message. Tried it again, with the same results. I was trying to write down the full panic kernel message, but it shut itself off in the midst of my writing.
Meanwhile, I've been reading on the forums that this issue could be caused by:
* faulty logic board;
* old battery that needs to be replaced;
* failing thermal paste.
How likely is it that it is one of those issues? Which one is the most likely culprit? I'd like to start the process of elimination so that we can get this computer fixed ASAP if the new hard drive also generates the same issues.
Many thanks.
My husband's Power Mac G5 won't boot properly -- it hangs on the grey Apple screen, after which the fans in the unit come on really loudly, and the unit eventually shuts itself off.
We've cleaned out the unit, all the vents, and checked the fans -- they seem to be working properly. Opening the case while the computer is on shuts one of the fans off, but the others are still really loud.
We took it to a Mac store, which diagnosed a hard drive issue and suggested data recovery and an installation of a new hard drive for $500. We are really broke at the moment and cannot afford something like this. So we've bought a new hard drive and are going to see if that solves any issues.
When we got the machine back from the store, I booted the machine from the install disk (holding down "C" while the machine booted), and got a boot from the hard drive instead. No "install" screen showed up. Tried a re-start while holding down "C" and the same thing happened.
I tried to run disk utility from the install disk, but the "repair disk" option was greyed out. I ran "repair disk permissions" anyway, and tried to restart in safe mode, which resulted in a panic kernel message. Tried it again, with the same results. I was trying to write down the full panic kernel message, but it shut itself off in the midst of my writing.
Meanwhile, I've been reading on the forums that this issue could be caused by:
* faulty logic board;
* old battery that needs to be replaced;
* failing thermal paste.
How likely is it that it is one of those issues? Which one is the most likely culprit? I'd like to start the process of elimination so that we can get this computer fixed ASAP if the new hard drive also generates the same issues.
Many thanks.
Power Mac G5, Mac OS X (10.4.11)
