Help!! iBOOK makes whirring and flickering noises and wont boot up

I had noticed that my iBOOK G4 had been getting louder recently, making an increasingly aggressive whirring noise. Then one day it went crazy, it sounded like it was 'thinking' very hard and it froze and wouldn't even shut down. I got it to shut down eventually but now it wont start up. It rarely gets beyond the apple logo and just sits there making very loud whirring noises and it sounds like the hard drive is continually 'thinking'. It did manage to boot up fully once but soon froze again, the whirring noise getting even louder.
Is this a hard drive failure? Is there any hope for it to come back on long enough to recover some files or will I just have to give up and replace it?

Hey Sarah and welcome to Apple Discussions,
Well first try this site:
http://www.coreyarnold.org/ibook/
That noise you hear sounds like the fan.
Richard

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Message was edited by: Hudi

Before deciding that you can't replace the drive yourself, visit the following site and find the step by step instructions for replacing the drive yourself:
http://www.ifixit.com/
If you see the instructions and feel that you can replace the drive yourself, you will save money that way. I'm not that familiar with modern iMacs, but I know it was very easy to replace the drive in my old iMac. It may not be as hard to do as you think. If you want extra help, you can post questions on the iMac forum.
If you still don't feel like it is something you can do yourself, try looking for an AASP (Apple Authorized Service Provider) in your area and see what it might cost to have the AASP do the replacement. Often an AASP can do a repair for less money than Apple, and they will usually be willing to install a drive that you have obtained elsewhere for a reasonable price. From what I have read on these forums, many people have used AASP's to install bigger and faster drives on their machines.
Definitely contact Western Digital about your drive. Usually WD drives come with a 3 year warranty, and if the drive fails before then, WD will replace the drive. KT has mentioned that the drive apparently is not under warranty, but might qualify for some sort of an upgrade. Before shopping elsewhere, check to see if this upgrade might entitle you to a very good deal on a replacement drive or something of that nature.
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Help!! iBOOK makes whirring and flickering noises and wont boot up

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