Mountain Lion not installing on 2009 Mac Mini

I have tried a few times to install the new Mountain Lion OS X onto my 2009 Mac Mini. I have gone through the basic checklists of what to do prior to installing but the install keeps on getting stuck after the original download and restart.
Once downloaded and the install process has begun it restarts and then the OS X install screen apears and it shows how many minutes it will take to install.
It remains at 34 minutes, the second time I attempted an install I left the computer on overnight to make sure it wasn't installing very slowly, it was left on for over 12 hours but did not advance in the process.
Details on the computer:
2009 Mac Mini
Software: version 10.7.5
Processor: 2.26 GHz Intel Core Duo
Memory: 4GB 1067 MHz DDR3
Hard Drive Space Available: 52.26GB
I have viewed many other problem threads here based on installing Mountain Lion and the hard disk having problems. My computer will just not advance past the very beginning of the install and I am able to reboot the install disk and retry or just go back to OS X Lion so I can use the computer again.
Anyone have a tip or something I can look into to see what may be the problem??

Found this elsewhere after a couple weeks of searching, inserting an old install DVD worked;
Ralan New Zealand
This helped meRe: Hang on Install of Mountain Lion
Aug 18, 2012 5:40 PM (in response to Vanisle)
Funnily enough I had the same problem yesterday.. tried 10 times but installer kept hanging at 34mins as well.. I noticed that while it was loading it was accessing the DVD drive.. with nothing in it then hanging.. I put in an installer disk for Snow Leopard, and the ML installer loaded and installed.. don't ask me why, no idea but give it a try..

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