Currently Being ModeratedApr 6, 2013 9:55 PM (in response to plittleton)
It's possible that OS X got damaged or your hard drive is damaged.
Start in OS X Recovery. To do that, hold Command and R keys while your Mac is starting. After starting, open Disk Utility, choose "Macintosh HD" in the sidebar and verify the disk. If it's OK, close Disk Utility and reinstall OS X. If not, repair the disk.
If the disk couldn't be repaired, it's damaged. If you haven't made a backup, you can buy an enclosure for the hard disk in OWC, extract the hard drive and install a new hard disk yourself. You have the steps to do that in iFixit or OWC. After doing that, reinstall OS X on the new hard disk and, after installing OS X, connect the enclosure and recover the data you need from your old hard disk
Currently Being ModeratedApr 6, 2013 10:09 PM (in response to mende1)
Hmm no matter what time I seem to press the start up keys, it simply will not respond to any of them. :/ I happen to have an enclosure from Owc already. I'll try running the hard drive verification on it externally.
Currently Being ModeratedApr 7, 2013 5:26 AM (in response to mende1)
Yes, at the first inclination of the start up sound. I've tried them all and have had no success. Believing that it could be operator error, I try the shortcut on another Mac, and they've worked perfectly. So, therefore I'm left to believe that the machine must be too Badly damaged somehow to except those start up commands.
Currently Being ModeratedApr 7, 2013 6:05 AM (in response to plittleton)
You might save a little time by downloading the 10.8.3 GM full installer from MAS onto the other Mac. Don't run it, but make a copy from the applications folder to somewhere else, as it will delete itself if run from there.
If you have the resources to have a spare external backup disk, then install the OS onto that and copy the installer itself over too. Carbon Copy Cloner (CCC) can be used to transfer this to any new disk on the computer and later to maintain an up-to-date clone of your system. Also, it can be used to run diagnostics and to make erase/installs on the computer, should things go really bad.