OSX Mountain Lion "Install Fails"

Mac Mini Late 2009 [other info: mac osx sits on origional Apple supplied hard disk. Superdrive DVD is now usb attached in its own enclosure. Its slit insude the mac mini is used by a second 1TB hard disk that holds all my data. RAM = 8GB]
I downloaded OSX ML last night & kicked off the install. Checked this morning and the install failed. No meaningful error messages just a "Restart" button. When I hit Restart OSX starts to try and install OSX ML again. This has happened 4 times. Each time the install fails with 14 minutes to go. Having become board with that process the last time around I checked out the options on the Utility menu and selected Restore From Backup. Guess what!? OSX ML tries to install again.  I am stumped!!! Has anyone any ideas that I can try?

go to disk utility and try to repair and verify your boot drive's disk and permissions. try reinstalling.
if that didn't work
go to where the installer is, right click it and choose "Show Package Contents"
find the installESD.dmg file and run it after you close all other applications. this should run an installer without going to the fabric background with the progress bar.
This may work for you if all else fails.

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    Safe Mode - About

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