Using my iMac video flashed and it shut down. Tried to restart. White screen with Apple comes up to start and a bar at the bottom starts to fill in. It goes about an eighth of the way over bar disappears continues for about a minute to come up then goes so long and shuts back down. Any ideas? I believe this one is early 09 model. Can't get to about this Mac to see the model number.
iMac, OS X Mountain Lion (10.8.2)
Try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
Or...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.
Didn't make any difference. Still starts up the grey screen with the apple then gets the bar coming in accross the bottom. Bar goes for a little bit disappears tries to go a little more on the booting and then shuts back down.
Sounds like there is an issue with the hard drive or the graphics card. Bring it in to an Apple store to get it checked, but it may cost you a lot.
Ok turns out to be a crashed 640 GB Internal Hard Drive. I am able to boot up on my external Drive. So will search out a new 1TB drive to put in the computer. Probably good since I have had trouble getting Microsoft Office to go on this one. Disk Utility could not repair the internal drive.
Shuts down
