Member Since: Dec 20, 2006
Location: Lake Mary, Florida
Mac Specs: 15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
12-28-2012, 04:29 PM
OK, just a few things.
First and foremost, OS X very rarely needs to be installed clean. There's not much a normal user can modify outside of the home folder, so at worst, if you want a clean slate, you can just create a new account and delete the old one.
Given the circumstances, it sounds very likely that your hard disk is in a failing state. Hard disk failures can manifest themselves in a variety of different ways. It can just go out and stop working, but more often, a portion of the disk becomes damaged - so the installer won't know that it's writing to a partially bad drive - and this is likely the cause of the extremely long install time. Typically an OS X install should take no longer than 30-45 minutes - that was your first clue that there's a hardware problem of some kind.
At this point, I would recommend running the Apple Hardware Test:
Intel-based Macs: Using Apple Hardware Test
This will help you to isolate the problem. If it is indeed the hard disk, your next step will be to replace it - then it's time to reinstall OS X and then finally, work to recover your lost data (if possible).
Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!