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yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Hi,
So a while back I bought an iMac G4 for very cheap with the knowledge that it was not working and kept kernel panicking for no reason. I had a go at fixing it by reinstalling the OS etc. but nothing worked. It is now about two years later and I'd love to get it working, so here is what it does when I start it up:
-Chime
-Fans run at low rpm
-Black Screen
Occasionally it will get to the folder with a question mark (No HDD in it right now as the previous one had quite a few bad sectors) but no further than that and after about 2 mins of that it crashes. However, I managed to get the boot CD in it, and after leaving it unplugged for a while, I plugged it back in and it got up to the Apple logo and then spewed its kernel panic accross the screen. Any suggestions? I'll upload pics of the kernel panic soon.
Thanks
[doublepost=1457272342][/doublepost]https://www.dropbox.com/s/1fyu7r7mrkoquyj/File 06-03-2016, 13 50 45.jpeg?dl=0
and
https://www.dropbox.com/s/cobj5e294m6odkj/File 06-03-2016, 13 50 16.jpeg?dl=0
 
Last edited:

0248294

Cancelled
Jan 10, 2016
713
868
Have you tried swapping RAM? I've heard that this exact error can be caused by faulty RAM.
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Have you tried swapping RAM? I've heard that this exact error can be caused by faulty RAM.
I've tried with quite a few different RAM sticks but I'll pull one out of my G5 and see if it works then.
Thanks
[doublepost=1457278607][/doublepost]
Have you tried swapping RAM? I've heard that this exact error can be caused by faulty RAM.
Nope - Still no luck :(
 

LightBulbFun

macrumors 68030
Nov 17, 2013
2,809
3,125
London UK
looking at your Panics its related to the Chipset driver... id start out with a known good ram stick and HDD with a known good OS install and see if it still panics... (the last Panic Points to a corrupted OS install ) (id also disconnect unneeded stuff like the ODD)
 

MacCubed

macrumors 68000
Apr 26, 2014
1,618
494
Florida
Did you try replacing both RAM sticks or just leaving one in? Also, was this the one off eBayfor like $50? I was looking at that one!
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Did you try replacing both RAM sticks or just leaving one in? Also, was this the one off eBayfor like $50? I was looking at that one!
Yeah, I've tried both slots, and not this one haha, I got this off of someone local for £10 :D
[doublepost=1457280912][/doublepost]
looking at your Panics its related to the Chipset driver... id start out with a known good ram stick and HDD with a known good OS install and see if it still panics... (the last Panic Points to a corrupted OS install ) (id also disconnect unneeded stuff like the ODD)
As soon as I can get hold of an IDE HDD i will try this as there's not one in there currently, thanks
 
Last edited:

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Okay it turned on again and took me straight to Open Firmware, it says invalid memory access
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
So have you tried just leaving ONE RAM stick in?
Yeah, I'll try and do it again
[doublepost=1457286939][/doublepost]Still a no-go unfortunately
[doublepost=1457289837][/doublepost]
have you reset the PRAM? and if you get kicked into OF does the keyboard respond?
When it kicked me I had the keyboard unplugged, so I'm not sure. I'll see if I can get it to do it again
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Okay so keyboard responds - I reset the NVRAM and it seemed to boot fine up until the Apple logo where it crashed again (Couldn't find driver)
[doublepost=1457293905][/doublepost]I just need it to get to the OS Install screen so I know that there's point in buying a HDD for it D:
 

havokalien

macrumors 6502a
Apr 27, 2006
649
51
Kelso, Wa
The Hard drive is most likely the culprit at this point. Heat/age in that tight space probably causing inconsistent issues make sense.
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
The only thing is that when it did have a HDD in there it still didn't work properly, but I'll probably buy one this week somewhen anyway. Is there anything else I can do in Open Firmware that might help?
 

LightBulbFun

macrumors 68030
Nov 17, 2013
2,809
3,125
London UK
try another OS install disk make sure your using one thats compatible with the iMac G4 (looks like your install disk is tiger so that should work fine) so i suspect it may be corrupt try leopard or another image
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
Okay, I tried with OS 9 - Didn't work at all, tried with Panther and it got to the Mac OS X loading screen where it loads the install, then it hung. I tried it again and it kernel panicked on the Apple logo again but I think this time it's a different error
[doublepost=1457364039][/doublepost]I'm in the installer!
[doublepost=1457364274][/doublepost]...and it crashed :(
 

LightBulbFun

macrumors 68030
Nov 17, 2013
2,809
3,125
London UK
looks like your going to need a new logic board or the memory your trying is not playing nice with this specific iMac G4... (btw these iMacs are not OS9 bootable normally.) (also keep in mind you have to re paste it every time you replace the RAM stick in the memory slot on the top of the logicboard...)
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0
looks like your going to need a new logic board or the memory your trying is not playing nice with this specific iMac G4... (btw these iMacs are not OS9 bootable normally.)
I'm in the OS X 10.3 installer now and everything seems okay now - Is there any way I can install to a flash drive?
 

havokalien

macrumors 6502a
Apr 27, 2006
649
51
Kelso, Wa
A usb installer will work just takes a long time as its USB 1. If os 9 wouldnt work probably needs the specific imac disk to install it.
 

CYB3RBYTE

macrumors 6502
Sep 2, 2014
454
293
Midwest
Use a good machine to install it to the USB/FW iPod, when the iPod has disk mode enabled. Make sure you fully wipe you iPod beforehand. Then, connect it to your iMac and hold down option upon boot up and select your iPod as the boot device.
 

yacobjhk

macrumors newbie
Original poster
Mar 6, 2016
13
0

havokalien

macrumors 6502a
Apr 27, 2006
649
51
Kelso, Wa
Try a re cycle store for old IDE drives as you dont need anything big really and that way its cheap and most have a 30 day return policy on parts for trade or otherwise.
 
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