HT201257 Imac shuts down unexpectedly then restarts then shuts down again

IImac shuts down unexpectedly then restarts then shuts down again

Hi bria90,
That is not good thing to have. Lets see if we can get it to boot up normally. Start with checking out the article below and go over each troubleshooting option that is available to get it back up and running. It will have you check things Safe Boot and resetting the NVRAM.
Mac OS X: Gray screen appears during startup
http://support.apple.com/en-us/HT204325
Take it easy,
-Norm G.

Similar Messages

I am suddenly having a problem with my iMac - when I try to restart or shut down, it hangs on a gray screen, and I have to hard reset to turn it off. How do I fix this?

I am suddenly having a problem with my iMac - when I try to restart or shut down, it hangs on a gray screen, and I have to hard reset to turn it off. How do I fix this?

http://support.apple.com/kb/TS2570 Mac OS X: Gray screen appears during startup

I am john and I need help downloading a progmmme yesterday and wanted to finish downloading open it and I am not told me that the program was shut down unexpectedly and restart ponia not opened and went back to download it and not opened my back probe to

i am john and I need help downloading a progmmme yesterday and wanted to finish downloading open it and I am not told me that the program was shut down unexpectedly and restart ponia not opened and went back to download it and not opened my back probe to turn off the computer and there was no case

i am john and I need your help yesterday bought a program called DJAY when I finish the download and got an error opened and I saw him there was no case to install and thank you for your help anyway

An update tries to run, but an error message stating "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again." I can't open Firefox

I click on Firefox and it says that Firefox is installing your updates and will start in a few minutes. Then I get "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again." this cycle never ends. Do I need to deinstall Firefox and re-install? If I do that, do i lose all of my bookmarks, etc?

See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
*C:\Documents and Settings\<user>\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates
*(%USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox\updates)
*C:\Program Files\Mozilla Firefox\updates
*Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
*Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer. Do not remove personal data when uninstalling.
*It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
You can skip the step to create a new profile, that is not necessary for this issue.
See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

My Ipod, keeps on saying very low battery then restarting. then turning bright with the apple logo and going back to very low battery again.

My Ipod, keeps on saying very low battery then restarting.Then turning bright with the apple logo and going back to very low battery again. HELP PLEASE.. I have plugged it in for 2 hours now.

If you are trying to charge from your computer, try a different USB port, or try charging from a wall outlet.
And try here. Troubleshooting iPhone hardware
Powering Apple and third party peripherals through USB

"The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again"

I'm using Firefox 4 Beta and I tryed install update but I dont got success. Now every time that I go start the browser is displayed the mensage: "The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again"
My release is installed not in default drive C:\. I installed in the other Partition on my PC.
I don't have other release installed.

Try a clean re-install.
* Download the setup file from http://www.mozilla.com/en-US/firefox/RC (this is for the Firefox 4 release candidate)
* Uninstall Firefox, do not select the option to "Remove my Firefox personal data"
* Delete the Firefox installation directory - http://kb.mozillazine.org/Installation_directory
* Re-install Firefox
This process does not remove the Firefox user data such as bookmarks and passwords which are stored elsewhere in the profile folder.
You may also need to manually reset the Software Update feature by deleting the software update files as shown in the "Software Update not working properly" section here - http://kb.mozillazine.org/Software_Update

ERROR MASSAGE-"The update could not be installed.Plase make sure there are no other copies of firefox running on your computer,and then restart firefox to try again".

<blockquote>Locking duplicate thread.<br>
Please continue here: [[/questions/870411]]</blockquote>
"The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again"this kind of error massage i found but there are no other copies of Firefox running on my computer.So please solve my prob.I can not uninstall this because i have saved important bookmark on my system.When i start my Firefox that time browser is opening few times later may be it's my internet slow connection but everyone has slow connection internet they are not having this prob then why should i have this prob.Why it is taking little bit time to open?

Thanks for the info about Trojan. It may be the problem. Meanwhile I went to Admin/Owner side and did some cleaning -- including trying to reload my Favorite/Bookmarks that have always carried forth from previous levels of Windows XP and earlier.
The new computer here did not grab the Bookmarks from the previous, and yesterday I thought I had them loaded, and today went to Worker-Bee side and they are not showing.
About those add-ons... I have no idea, but think I got everything up to date yesterday. I will look at your earlier reply tomorrow or this weekend when I have more time at home to learn from it.
Thank you for your time in helping.
Late here, heading to sleep. Marilyn

ERROR MASSAGE- "The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again".

"The update could not be installed.Please make sure there are no other copies of Firefox running on your computer,and then restart Firefox to try again"this kind of error massage i found but there are no other copies of Firefox running on my computer.So please solve my prob.I can not uninstall this because i have saved important bookmark on my system.When i start my Firefox that time browser is opening few times later may be it's my internet slow connection but everyone has slow connection internet they are not having this prob then why should i have this prob.Why it is taking little bit time to open?after that update prob when i installed the update file.

Firefox [[Safe mode]] is a diagnostic mode that allows troubleshooting.<br />
You start the same version, only some features are disable like add-ons (Tools > Add-ons > Extensions).
See http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
C:\Users\<user>\AppData\Local\VirtualStore\Program Files\Mozilla Firefox\updates
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data when uninstalling.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

With the latest update I get the following error: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again; suggestions, advice, help.

Help>About Firefox> says I am using Firefox/3.6.10./GTB7.1 I get a note from Mozilla that there is an update. I download it after granting permission to change my machine. I say OK. A green bar slides across the monitor announcing that the update is being downloaded. When I then assume it is being installed I get the following error: The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again. There are no other copies running. The machine is not on a network. I am using WIN7

Thanks for the info about Trojan. It may be the problem. Meanwhile I went to Admin/Owner side and did some cleaning -- including trying to reload my Favorite/Bookmarks that have always carried forth from previous levels of Windows XP and earlier.
The new computer here did not grab the Bookmarks from the previous, and yesterday I thought I had them loaded, and today went to Worker-Bee side and they are not showing.
About those add-ons... I have no idea, but think I got everything up to date yesterday. I will look at your earlier reply tomorrow or this weekend when I have more time at home to learn from it.
Thank you for your time in helping.
Late here, heading to sleep. Marilyn

I keep getting the foloowing error." the update couldnot be installed. please make sure there are no other copies of firefox running on your computer and then restart firefox to try again". i tryed to reinstall but no help.

error." the update couldnot be installed. please make sure there are no other copies of firefox running on your computer and then restart firefox to try again".

You already appear to be running the latest Firefox 7.0.1 version, so there should be no need to update.
*http://kb.mozillazine.org/Updates_reported_when_running_newest_version

Imac opens with message to restart by holding down power button but nothing happens

imac opens with white on black message to restart by holding down power button but nothing happens

Sounds like a kernel panic.
What is a Kernel Panic?
http://support.apple.com/kb/TS3742
and http://support.apple.com/kb/TS1892?viewlocale=en_US
http://developer.apple.com/mac/library/technotes/tn2002/tn2063.html
More details here:
http://www.thexlab.com/faqs/kernelpanics.html
Useful article on how to avoid and eliminate kernel panics here:
http://reviews.cnet.com/8301-13727_7-10344626-263.html?tag=mfiredir

Iphone 4s freezing at start up then shuts off and keeps restarting then repeating that process over and over. I have tried to reset the phone two different ways and still this problem occurs after I update it or turn off the phone.

yes the title says most of what is going on.
I recently reset my phone, losing all contacts and pictures. It was working fine, then after I updated it, it will not turn on completely.
It starts up with the apple logo
-goes to the ios 6 (please slide to open) screen
-then shuts off
-and repeats the process unless I shut the phone off manually
I have tried to hold the lock and the home button down to manually reset the phone
I have also tried reseting the phone completely previously, and I still have this problem.
Any ideas?
Thank you!!

I really don't have an answer for that one. I guess that while trying to get things working correctly, I would use the most basic monitor I had which in your case would be the Eizon using the Thunderbolt port and adaptor.
When you boot into Safe Mode the startup is quite slow, but you should get the Apple logo and then the spinning gear below it (release the SHIFT key when it appears.) Then after a little more time you should see a gray progress bar appear below the spinning gear. When that disappears the computer will startup to a login screen.

I am having a hard time conecting to the server on my Ipad 2. i am able to log in once to the server, do 1 thing,then it quits on ad i have to shut it off and restart then only 1 site then off again. then a message cannot co nect to serve i get some help

di am having trouble with my IPAD2.i keep losing connection after going to 1 site. i have to rebot and start over again. i get the message "cannot find sever"

di am having trouble with my IPAD2.i keep losing connection after going to 1 site. i have to rebot and start over again. i get the message "cannot find sever"

My 3.6.14 keeps trying to update and gives this error message:"The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again."

My OS is Windows XP version service pack 3. I even tried to install FF4 but it never get installed. As I mentioned my FF keeps trying to update itself but it gives the error message I provided in title. Now I don't have access to my FF browser and my life is stopped because I have all my passwords saved on FF. I restarted my notebook but it stills try to update itself giving the same error message. I can not also upgrade my Adobe reader 7.0.7 to 10 I have tried more than 10 times but it never gets upgraded. I had this Adobe problem since long time ago.

Run the Firefox program once as Administrator (right-click: Run as Administrator).<br />
If that doesn't help then do a clean reinstall.
Do a clean (re-)install:
* Download a fresh Firefox copy and save the file to the desktop.
* http://www.mozilla.com/firefox/all.html
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere (not in the Firefox program folder) and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

Why did my i phone crash, then restart, then ask for activation and when i type my correct Apple ID it wont validate it

When i was facetiming my friend my phone had crashed, I could still hear her so i thought nothing of it, then all of a sudden my phone had restarted i thought it was nothing either due to it happening because its so old, then i checked and it told me to activate my phone , so i used my Apple ID and it didn't work even though it has been linked to my phone for 7 months, when i checked the email that was connected it wasn't even the same email, it was shorter, so now i dont know what to do help please. My iPhone is a 4s with IOS. 8

i had this problem, i turned off imessage, turned off phone, turned on phone, turned on imessage and let it reactivate.

HT201257 Imac shuts down unexpectedly then restarts then shuts down again

Similar Messages

Maybe you are looking for