So my iBook is buzzing: yay or nay?

[john_satc]

I was sat typing away in my iBook that just turned 1years old. And suddenly i hear this buzz. I look to my left, and then to my right. And then I realise, it's coming from my iBook. It's from the left hand side at the front, not hot at all but still a clear 'bzzz'. I am running the hardware test on it now. But is this a serious problem or a sort of one off thing I shouldn't worry about?
Cheers, Jon

EDIT: I should have mentioned. It is not constant. Just heard it 5 times max each time for a couple of seconds. And I hope its not hard drive failure, I really don't have time for this.

 

[calebjohnston]

Back up all your data immediately, could be imminent hard drive failure.

 

[ITASOR]

left hand side front is where the HD is located. back up ASAP.

 

[john_satc]

left hand side front is where the HD is located. back up ASAP.

Well I have backed up and did hardware test and it seems fine. The noise has stopped so just gonna keep my fingers crossed. Thanks for help tho!

 

[calebjohnston]

my ibook likes to make noises from time to time too, but it all works fine. SMART status is verified, it's running smoothly and all that. nature of the beast i suppose.