Currently Being ModeratedMar 5, 2013 10:57 AM (in response to darkhorse85)
If you have the installation discs that came with computer when you bought it, then see what happens when you boot from the installer Disc One.
Booting From An OS X Installer Disc
1. Insert OS X Installer Disc into the optical drive.
2. Restart the computer.
3. Immediately after the chime press and hold down the "C" key.
4. Release the key when the spinning gear below the dark gray Apple
5. Wait for installer to finish loading.
Currently Being ModeratedMar 5, 2013 1:56 PM (in response to darkhorse85)
It will tell us if the problem is most likely hardware or software. If the former then you'll see the same thing happen booting from the installer disc. If the latter then the installer will boot fine with no problem indicating a problem with your OS X installation.
Currently Being ModeratedMar 6, 2013 2:14 AM (in response to Kappy)
I'm opened my Mac this morning and got past the user login! Strangely its came on all on its own. Now I'm using to type this message. Although the problem could well still exist and its something I can't afford to leave alone.
Why do you think this has happened and does this help determine the hardware/software issue?
Currently Being ModeratedMar 6, 2013 11:11 AM (in response to darkhorse85)
I'm afraid it doesn't decide anything. Hardware problems can be intermittent. Replacing the software is the only way to remove it from suspicion. Usually, a screen turning black is not a good sign.