Q: My G5 doesn't make the Chiming noise  when I restart it.

You need to reinstall that module or replace it. A Power Mac G5 won't recognize RAM which isn't part of a matching pair.

(73702)

A missing, jarred, or problematic RAM module can cause the computer to fail to start up or other problems.

(73703)

I might have the same problem. My computer shut down and the restarted by itself every 15 minutes or so, and I didn't hear the chiming sound when I restarted the computer annually. Where can I purchase that RAM module you guys are talking about? Thank you.

I meant manually.

If a G5, which exact one is it?

Actually, yours sounds more like it's shutting down due to heat & you have Restart automatically set.

Have you blown the dust out lately?

Get Temperature Monitor to see if it's heat related...

http://www.bresink.com/osx/TemperatureMonitor.html

At the Apple Icon at top left>About this Mac.

Then click on More Info>Hardware and report this upto *but not including the Serial#*...

Hardware Overview:

Machine Name: Power Mac G5 Quad

Machine Model: PowerMac11,2

CPU Type: PowerPC G5 (1.1)

Number Of CPUs: 4

CPU Speed: 2.5 GHz

L2 Cache (per CPU): 1 MB

Memory: 10 GB

Bus Speed: 1.25 GHz

Boot ROM Version: 5.2.7f1

Thank you for the quick reply. here is the mac info. I did dust it off, and changed the battery.

Mac Pro

MacPro3,1

Quad-Core Intel Xeon

2.8 GHz

numbers of processor 1

numbers of cores 4

L2 cache 12MB

Memory 4GB

Bus speed 1.6GHz

Boot ROM Version MP31.006C.B05

Ah, not a g5 at all, a Mac Pro, you might ask over here...

Mac Pro

Little that I know!. Thanks, Amine. You're the Man.

OK, good luck.