Q: My Power Mac G5 desktop will not boot up, just getting Apple logo
Hi everyone,
I can't get my Power Mac G5 desktop to boot up, all I get is the greys screen and Apple logo, but no spinning wheel? The first event was when the computer froze. I did manage to boot up a couple of times initially but the computer froze again as soon as it finished booting up.
I have been reading lots on this forum about this sort of problem and I have tried all sorts but just having no luck at all, please can someone help?
I was eventually able to get the install disc into the computer and booted up holding down 'option' (Holding down C did not work)
When the computer started with the install disc 1 a window openend with:
1. OS X on the hard drive
2. Mac OS X install disc 1
3. Apple Hardware Test
If I click on my OS on the hard drive I just get the grey screen and apple logo.
If I click on the Mac OS X install disc 1 the same, I just get the grey screen and apple logo
On the Apple Hardware Test there are two options, quick test and extended test. I have done both several times and everything passed! Initially there was a memory failure so I thought 'brilliant' I have found the culprit! I removed the offending ram and retested, both quick and extended, all passed. So thinking that was it all sorted I hit the restart. aargh! Grey screen, apple logo!!!!!!!!!! Oh dear what a pity I screamed, or words that meant that anyway!
I have read about getting into 'Disc Utility' or 'First Aid' but I can't find these options anywhere on the install disc and obviously I can't get into the system on the hard drive for the disc utility as it won't boot up.
Also I have tried:
1. Changed the pram battery for a new one.
2. Tried to reset the pram on boot up holding down cmd + option +p + r (I got a double chime but nothing else just a black screen)
3. Tried booting holding down shift button (chime and then sounded like it was trying to start, a bit of clicking which is more than before, but then nothing)
4.Tried booting holding cmd + R (chime but then black screen)
5 Tried booting holding down 'C' with install disc in (grey screen + Apple logo but nothing else)
6. Tried booting holding cmd + option + o + f (up comes black screen, in top left corner some computer script . I typed in 'mac-boot' as suggested on a forum and then return, but just back to grey screen and apple logo.
7. Saw something else about pushing pcu reset button inside the computer (did this no change)
Now I have run out of options and scratching head? If the hardware test says everything is ok, why can't I get past the grey screen and Apple logo on either the OS system on Hard drive or the install disc?
Any help would be real appreciated.
Thanks.
Power Mac G5 (Early 2005), Mac OS X (10.5.8)
Posted on Jun 18, 2016 10:40 AM