iMac won't boot from any HDD or install disc

Hi everybody.

This morning my iMac just didn't wanna boot up, it powers on and the start sound plays but nothing more, all white screen.
Tried holding OPT at start, my mouse cursor becomes visible and active but none of my startup drives show. Also tried booting from both SL and leopard install DVD, it reads the disc for a minute or two then spits it out, nothing on the screen, all white.
Tried resetting PRAM, holding down CMD OPT+PR, it reboots but same thing after that.

My internal HDD crashed recently so I've been booting from my external drive which has SL installed. This has worked fine unitl now, last night I shut the machine down it did take an extra two minutes to power off which was out of the ordinary.

All help appreciated which can avoid me from sending it in for repair.

iMac 24" 2007, Mac OS X (10.6.2), 2GB RAM

Posted on Feb 28, 2010 1:50 AM

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2 replies

Feb 28, 2010 3:00 PM in response to macbig

Thanks for the reply.

Since my internal drive had been failing I guessed it had to be the culprit and right I was. After I swapped the HDD (plus swiped the interior clean) my iMac was like new again plus I didn't have to send it away.

But what I can't quite understand is why a bad internal drive which was not in use would hinder the mac from booting from the install DVD all of a sudden.

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iMac won't boot from any HDD or install disc

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