The noise or sound on start up?

Hi i have the G5 when you push the power button to turn the system on it makes a start up sound. I have an external hard drive connected via usb and a tablet.
Sometimes the mac will start up after the first sound and other times it will make the same noise 3 or 4 times before it starts up. Is this normal? I thought it was the tablet as the blue indicator light, when it makes 3 or 4 sounds doesnt illuminate. If it does it boots after the first.
So, i unplugged the tablet and 1 noise and was booting up. Then it made 2 or 3 noises again hmm?
My question is. Is it because of external devices that it irregularly starts up or is it normal and nothing to be concerned about?
Thanks in advance.
Nick

Well, it is certainly unusual to be hearing them repeated unless you happen to be simultaneously holding the down the command option p r keys when you start up the machine! (this resets the PRAM).
One possibility may be a power cord that isn't fully pushed into place. Sometimes the little "collar" on the power cord where it attaches to the computer can stop it fitting properly.
Another may be a dying PRAM battery. If you have one of the earlier imac G5s these are very easy to replace (and the battery used is the very common CR2032 used in many caculators, kitchen scales, etc and available at any electrical parts shop, or probably even your local supermarket.) If it is an iMac with a built in "iSight" camera, though you should take it to a dealer for replacement.
The external devices are unlikely to be causing the problem in this case, but it would be worth disconnecting them and seeing what happens.
Cheers
Rod

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The noise or sound on start up?

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