So I installed Mountain lion and then I restarted it but it just goes to the Apple screen with the spinning dial below it and it won't restart, It was like that for five hours, please help.
OS X Mountain Lion, Mac Book Pro-July 2009
I've got the exact same thing
I just restored my computer from my last back up. Im going to update everything and clean it up. Then reinstall Mountain Lion and hope that it works this time.
Having the same issue. Also getting a screen showing a circle with a line through it. HELP!!!!!!!!!
Going to try and reinstall OS Mtn Lion.
Tried reinstalling- did NOT work
PRAM- did NOT work
Just spoke with Apple Tech- running a Apple Hardware Test
Video on YouTube of the issue
http://www.youtube.com/watch?v=n2wzb0V8I-U&feature=youtube_gdata_player
Try running the Apple hardware test to rule out hardware issues
http://support.apple.com/kb/ht1509
Note: Be sure to disconnect any external devices, printers, hard drives, scanners, and so on (other than the Apple keyboard and mouse) from your Apple computer before starting up to Apple Hardware Test and running the diagnostic.
To start up your computer in Apple Hardware Test:
Press the power button to turn on your computer.
Press and hold the D key before the gray startup screen appears. If Apple Hardware Test does not start up, see the Additional Information section at the end of this article.
Note: Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT. An Internet-enabled connection via Ethernet or Wi-Fi is required to use this feature.
It takes a minute or so for Apple Hardware Test to start up and inspect your hardware configuration. While this is taking place, an icon appears on the screen:
When the process is complete, select your language and click the right arrow. If you aren't using a mouse, you can use the up and down arrows to select a language and then press the Return key.
The Apple Hardware Test console appears. You can choose which sort of test or tests to perform:
To perform all of the basic tests, click the Test button or press the "T" key or the Return key.
To perform a more thorough diagnostic test, select the "Perform extended testing" checkbox under the Test button before you click the Test button.
Your test results will appear in the window in the bottom-right of the console.
To exit AHT, click Restart or Shut Down at the bottom of the window.
Additional Information
Apple Hardware Test is included on the DVDs that are shipped with some Macintosh computers. If the copy on your hard drive becomes unavailable, use the DVDs to run Apple Hardware Test.
For Intel-based Apple computers that shipped with Mac OS X v10.5.4 or earlier, Apple Hardware Test is located on the Mac OS X Install Disc 1 and should be included with your computer.
For Apple computers that shipped with Mac OS X v10.5.5 to 10.6.7, Apple Hardware Test is located on the Applications Install Disc 2 and should be included with your computer.
For some Apple computers that shipped with OS X Lion, if Apple Hardware Test cannot be found on the hard drive, an Internet-based version starts up instead. An Internet-enabled connection via ethernet or Wi-Fi is required to use this feature. Some computers that shipped with Lion require a software update to use this feature. See Computers that can be upgraded to use Lion Internet Recovery for more information.
Learn about the language availability of AHT.
The Hardware Profile tab of AHT provides specific information about your computer. To see this information, click the tab, then select a subject area on the left.
Restart while also holding down the 'shift key'.
Login to your account and remove everything from the list here:
> System Preferences...> Users & Groups | Login Items
by selecting everything in the list, then hitting the minus '-' key underneath.
Restart normally.
Any improvement?
Removed everything from list but No improvement. It still won't restart normally. But at least 'shift key' gets me to Desktop.
Running out of ideas... Same. After completing installation it failed to restart and ended up in a constant reboot loop... Restart...Jargon screen (your computer restarted because of a problem....)...Apple...Spinning wheel....Restart.... I tried Command R and verified and fixed disk and permissions. Tried re@-installing Mmountain Lion... I tried Command/Option/P/R and held it for 3 gongs... And restarted.. Hmmm it booted, all seemed fine, normal desktop appeared with icons for about 30 seconds... THEN it restarted and went back in the reboot loop again. Tried deleting the login items above this post....back in loop... Aside from using safe mode, I'm out of ideas...
The thing is. Mine just stays at the apple screen with the spinning dial below it. It won't restart. I had it sitting there for five hours.
I am expereincing a simialr issue, for me to get back to my desktop I had to boot into the recovery console, go to disk utility, verify and repair the disk, then my iMac rebooted normally.
Got exactly the same issue,... Mac support suggested it might be the keyboard,.. but it obviously isn't if everyone is having the same issue!
Ok, once I had installed Mountain Lion my MacBook Pro from 2011 would not start up, I got the chime, then the apple screen with the spinning disk... none of the keyboard shortcuts worked... I spoke to apple tech support who thought the keyboard was broken..
I then simply unplugged the power and tried starting up again (I had intended to leave it until the power ran out, in case that would solve it). I left it for 15 mins, then restarted and tried the "Alt with V" and it worked,... then I tried the shift and that worked too!!! I am currently reinstalling.
I know it sounds bizarre,... but unplug the power!!! Worked for me!
I was having trouble with the 'grey screen' as well on the ML install. I read the forums and thought I'd try the simplest suggested fix first so I unplugged the power to my iMac, gave it 5 minutes plugged it back in and voila!
Worked for me as well!
I should get royalties from Apple for that solution.... who'd have thought it is linked to the power supply!!
I would like to add that I tried the ML install again and had the same issue, however at least I was able to restore from a backup!
If the power solution works for anybody else, please post so that Apple can work a fix into the install.
Installed mountain lion, Computer won't restart. Help!
