Power Mac G5 Help!! Freezes up and fans are on high

drumforfun19 · Apr 24, 2007, 03:09 PM

I have this Power Mac G5 and every now and then it'll freeze up, the fans will go full blast, and the screen will go black. It's not even when I put a heavy load on it.

I usually just hold the power button down and do a hard shut down. Does anyone know why this G5 keeps doing this? Should I re-seat the ram and GPU?

Thanks for any help given.

dartzorichalcos · 03:48 PM

Try zapping the pram and is your PowerMac G5 one of the models listed in this repair program?
Did you add any ram recently? If you did, put the original ram back.
One more thing you could do is run the Hardware Test from the Install Disc and see what results come up from the Hardware Test.
It could also be a hard drive failure, so try repairing the disc using Disc Utility from the Install Disc.

drumforfun19 · Apr 25, 2007, 08:19 AM

Quote:

Originally Posted by dartzorichalcos

Try zapping the pram and is your PowerMac G5 one of the models listed in this repair program?
Did you add any ram recently? If you did, put the original ram back.
One more thing you could do is run the Hardware Test from the Install Disc and see what results come up from the Hardware Test.
It could also be a hard drive failure, so try repairing the disc using Disc Utility from the Install Disc.

well my G5 isn't on that list of recalls. I don't think it has a power supply problem. Also it's 2x512mb of stock apple RAM, but I'm going to try resetting the PRAM and NVRAM. If that doesn't work I'll try the hardware test and so on. Thanks for the reply and help!!

Kosh66 · Apr 25, 2007, 09:32 AM

Do you have any USB peripherals other than the mouse and keyboard? Does it happen when you're in a certain program or is it random?

Have you checked what your log says. Sometimes the log will point to what the kernel panic is from.

King Kuk · Apr 25, 2007, 10:06 AM

Hi.
I had this happening when I used an iBook as an external drive (Transfer mode), and the battery got empty. The iBook fell asleep, so I unplugged it (from FW). That caused the G5 to freeze, and the fans started blowing like crazy.
Maybe you have a faulty drive somewhere? I guess the internal drive could have a hibernation/spindown problem. Some drives get problems spinning up when they get old.
My recomendation would be to back up all your data A.S.A.P. , and get a new drive.

Cheers

Apr 24, 2007, 03:09 PM	#1
drumforfun19 Guest Join Date: Apr 2007	Power Mac G5 Help!! Freezes up and fans are on high I have this Power Mac G5 and every now and then it'll freeze up, the fans will go full blast, and the screen will go black. It's not even when I put a heavy load on it. I usually just hold the power button down and do a hard shut down. Does anyone know why this G5 keeps doing this? Should I re-seat the ram and GPU? Thanks for any help given.
	0

Apr 24, 2007, 03:35 PM	#2
dartzorichalcos Banned Join Date: Mar 2007 Location: Atlantis	Try zapping the pram and is your PowerMac G5 one of the models listed in this repair program? Did you add any ram recently? If you did, put the original ram back. One more thing you could do is run the Hardware Test from the Install Disc and see what results come up from the Hardware Test. It could also be a hard drive failure, so try repairing the disc using Disc Utility from the Install Disc. Last edited by dartzorichalcos; Apr 24, 2007 at 03:48 PM.
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Apr 25, 2007, 10:06 AM	#5
King Kuk macrumors newbie Join Date: Apr 2007	2€cent Hi. I had this happening when I used an iBook as an external drive (Transfer mode), and the battery got empty. The iBook fell asleep, so I unplugged it (from FW). That caused the G5 to freeze, and the fans started blowing like crazy. Maybe you have a faulty drive somewhere? I guess the internal drive could have a hibernation/spindown problem. Some drives get problems spinning up when they get old. My recomendation would be to back up all your data A.S.A.P. , and get a new drive. Cheers
	0

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Apr 25, 2007, 09:32 AM	#4
Kosh66 macrumors 6502 Join Date: Jul 2004	Do you have any USB peripherals other than the mouse and keyboard? Does it happen when you're in a certain program or is it random? Have you checked what your log says. Sometimes the log will point to what the kernel panic is from.
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