No startup, blinking folder, VERY hot

Been about 4months since I tried last, but figured I'd give it a shot here. My 2007 iMac won't startup. Only shows blinking folder with question mark, and back of comp gets VERY hot if stays on. Tried doing they keyboard thing with apple key etc.., no results. Don't wanna toss a new harddrive in it if that's not the problem. Any diag tips? Thanks!

It turns out that my SATA just wen't dead. I've been experiencing several power outages while my iMac still is running. I also noticed months ago that whenever I verify disk permission there are some stuff that is beyond repair and it shows red. I just ignore it thinking that it will go away and the inevitable happened. Good thing though I just have a few gigabytes of photos taken months back I had a full backup on all the docs that I have. I tried resurrecting my Western Digital 160GB SATA using Spinrite V6 but to no avail. BIOS from Windows can't even mount the drive. I've given it up. I still have a one last hope though to bring the dead drive to a data recovery company. And hope that they can replace the SATA board or the mechanical part with a new one on a clean room and recover what they can for a fee.
Is there any hint when a drive is about to fail? I did experience frequent hangings and endless spinning beachball from time to time also some weird sound that seems my hard drive is about to blast by spinning profusely for no apparent reason.
My 160GB SATA drive is about 5 years old. Is this the regular lifespan of SATA drives? Should I replace it every say 3-4 years? I've been using it almost everyday from Monday to Saturday. I'm considering buying a drobo so I can dump all my files without worries of being burn again by a terrible Hard Disk Crash!!!
I've re installed everything on my imac using the new 500GB SATA. Good thing that everything was fine except for the SATA Drive. I've bought an AVR and 500VA APC (Power Backup incase of Power Outage) so that I could prevent it from happening again. Also do you have any idea what brand of SATA is the quietest the most silent? Thanks for your help.
Message was edited by: besprenbrian

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  • Can't startup blinking folder question mark

    There are similar questions in these forums, but my situation is different. My MacMini froze and I had to press the power button on it to restart it. I get the folder with the blinking question mark. I do not have any disks in the drive. I have not installed any new operating systems for at least a year. No external drives connected. I shut off and started the Mac Mini yesterday with no problems.
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    Message was edited by: besprenbrian

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  • Blinking folder with question mark at startup

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