Hard Drive not mounting on start up, or not mounting at all.

Recently, as some of you may know, I've had hard drive problems. I didn't get it fixed, but the problems came and went and I didn't have time to send it away.
But 2 weeks ago, before I went on holiday, I ran TechTool Deluxe which came with my 3 year Apple Care. It ran, found errors on the drive (something like -38 or -58 errors), so I started repair. It was after 7 hours that I held down the power button, because it just wasn't going anywhere. It had been on the same step and task for 7 hours and kept giving me every now and then the message of "Working...". But that screwed the drive more, as when I turn it on, I get the message stating to restart.
I'e tried getting at the files using this PowerBook and FireWire, using all the correct techniques, but the drive wouldnt even mount on here. Disk Utility could not mount it either.
The files, Im sure, are ok as TechTool gave me a number of the total files on the drive, which is correct. But I just cannot gain access to them.
Please help, thanks,
(it's a first gen iMac G5 btw)

This is the forum for Intel based iMacs. You need to be posting in the iMac G5 forums for your G5 and the Powerbook forums for the Powerbook.

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Reset your login password using your Apple ID
Before you can use your Apple ID to reset your login password, make sure that FileVault isn’t enabled on your computer.
Also make sure that an Apple ID is associated with your user account, and that an administrator has given you permission to reset your own password using an Apple ID. For more information, see this help topic:
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