Imac is frozen

I am using an imac OS X Lion 10.7.5 (11G63b) with processor 2.7 GHz Intel core i5, memory 4GB 1333 MHz DDR3 . Recently my imac is freeze and have a spinning wheel after couple hours working. Sometime it is automatically turn off. My disk space have 700Gb free and my Ram has 2gb free.Could anyone help me how to fix the problem, and how to speed up my computer?
Thanks

Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time (>=70,) then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Do this when you start to see the spinning beachball, then start monitoring it.

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My iMac is frozen with Bluetooth setup assistance.

My iMac is frozen with the screen showing Bluetooth setup assistance

Hi Chris, do you have a USB Mouse & KB to test with?

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my imac is frozen with the pop up notice of "usb over current notice, a usb device is currently drawing too much power. the hub it is attached to will be deactivated". have tried unplug and restart, no help. have tried power hub, no help. my wired keyboard and mouse do not work. help.

Unplug all devices including your mouse and keyboard. Now do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computer's power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
If it starts up normally plug in 1 item at a time. You may have a defective device that is drawing too much current.

My IMac is frozen with the screen white apple logo appears and spinning wheel. Long empty rectangle is under the spinning wheel?

My IMac is frozen with the screen white ,apple logo appears and a spinning wheel under it. A long empty rectangle empty appears under the wheel and is empty.

Your iMac is trying to go into safe. This usually happens when it has detected an issue with the OS or file system.
Follow the steps outlined in http://support.apple.com/kb/TS2570

HELP! iMac is FROZEN for past two hours.

imac is frozen for past two hours. I was doing a reinstall of the OS because mail searches were not working. I'm afraid of shutting off and restarting for fears of losing my hard drive which I understood would be ok except for a fresh install of system.
WHat can I do?

If I'm recalling correctly, to disable extensions, boot up while holding down the shift key. You'll then be able to open the extensions manager to revert the set-up. After getting that airport issue resolved, then, due to the hard shutdowns, don't forget to run an os 9 disk utility to repair the hard drive prior to downloading any update.
You'll probably want to post additional questions to the OS 9 boards, here:
http://discussions.apple.com/category.jspa?categoryID=99

My IMac is frozen and will not allow me to get to the desktop screen. How can I stop it from freezing?

My IMac is frozen. When I power up it will only take me to the white screen with the apple on it. I cannot get to the desktop screen. Any help in fixing would be very much appreciated. Thanks Pete

That's an ongoing problem with this recent version of iPhoto as you can see from the topics at the right under "More Like This". The workaround that works for all is to export the photos to a folder on the Desktop and upload to Facebook with your browser until a fix is found.
Report your problems to Apple via http://www.apple.com/feedback/iphoto.html
OT

IMac seems frozen in that following start-up, sun flower just keeps spinning on a blank screen (only Aplple logo on white screen)

IMac seems frozen in that following start-up, sun flower just keeps spinning on a blank screen (only Aplple logo on white screen). Turning off and on not helpful. Any ideas?

What iMac is it and what version of OS X are you running?
Try an SMC reset: https://discussions.apple.com/docs/DOC-3603
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My iMac is frozen on boot up screen

My iMac is frozen on boot up it is stuck in the grey screen with apple logo wheel just keeps spinning for days , help!

For Mac OS X 10.4, Mac OS X 10.5, Mac OS X 10.6 Try here > OS X: Gray screen appears during startup
If you have Lion v10.7 installed, you can use Lion Recovery to repair the startup disk or reinstall the Mac OS X if necessary.
It helps to tell us which Mac OS X you have installed.

My iMac is frozen on a blue screen during an update software for snow leopard. What do I do? Turn off my imac?

My iMac is frozen on a blue screen during an update of software for snow leopard. What do I do? Should I turn off the computer?

do a hard shutdown of the mac (holding down the power button until it shuts off) then do an SMC reset, the following article tells how to do this:
http://support.apple.com/kb/HT3964
after doing this reset and restarting the mac, try again to install the update.

IMac 27" frozen screen

just can not identify in what situations, but when my Mac has a frozen screen, I have no other alternative but to push the off button. The most ironic thing is that, clearly the internet connection keeps. I know this because I'm usually listening to online radio. When it occurs, I can not change my dashboard and also can not switch to another application because I can not use the keyboard and the mouse click does not work.
I am currently using Mac OS X Yosemite, but the problem has persisted for several other versions of the system.
I

I have exactly the same problem with a my 27" iMac of exactly the same vintage and configuration. It freezes this way anywhere between once a day and once a week.
I also see an additional variation of this crash, where when I wake up the machine from sleep, the backlight comes on, but no image is drawn. It glows gray. In the form of the crash that Helton reports, the cursor moves with the mouse, but nothing responds to clicks. I've also seen where streaming (and I believe locally stored iTunes) continue) to play. I am not sure whether the machine remains visible on the network.
I have never used any anti-virus on this machine. In a desperate attempt to isolate the problem I have done the following:
Fresh clean install of Mavericks onto a new, external Firewire 800 drive
After the install, I only re-installed the apps I use frequently: iTunes, Aperture, Chrome, Adobe Flash and Microsoft Remote Desktop, HP printer driver, TextWrangler. That's it.
Replaced 3rd-party memory I had installed with the original factory installed 2x 2GB DIMMs
Blown out the bottom vents and the circular vent in back with canned air
Unplugged the external DVI monitor I was using
Done the usual setting resets via the startup
Ran the built-in memory checker at startup
Ran checks on the harddrives for errors, permission problems, etc...
Wiped the internal drive clean, and did a fresh install on that
The crashes still occur.
The system does not appear to be hotter than normal. I used to have a widget that monitors temps (but doesn't change fan speeds).
This system has the Seagate 1TB harddrive that was eligible for a recall, but I didn't do it. The drive has never reported any SMART errors.
Since you are still seeing crashes after updating to Yosemite, I'm not sure what to try next, myself. I've considered pulling it apart to make sure there is no dust in the fans. It doesn't seem to be overheating, but despite the sensors, there doesn't seem to be a way to record a regular temperature history to see what the temps were like at the moment of the freeze.
Of course, it's out of warranty. It's five years old, but it's plenty fast enough for me. The screen is still gorgeous. If it weren't for this, I'd use it for at least another two years. I was thinking of getting a MacMini to plug into it and use the iMac as a screen, but the new MacMinis are dual-core. It wouldn't be a nice leap in performance.

HT1379 My iMac is frozen. There is just the spinning wheel.

My iMacs frozen. It will turn in, and the screen pops up; but there is just the spinning wheel. I can't click in anything. I've tried turning it off and back on, and it didn't work.

Disconnect all devices from the computer then do the following:
Boot up from your Snow Leopard Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose "Disk Utility" from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the "repair disk" button in the right hand section of the window.
Once this process has been completed restart your computer and repair permissions directly from Disk Utility.
If Disk Utility is unable to complete the repair, you will need to use a stronger 3rd party utility like DiskWarrior, Techtool PRO (not Deluxe) or Drive Genius.

IMac 2009 frozen after booting and startup

So, a few days ago, my iMac got stuck in the white loading screen that everybody says. It happened before already, and at the time, I just booted holding the key C and installed the OS with the CD. That went ok, nothing wrong. But then, a few days ago as I said, it happened again. At first, I tried booting it with the keys Command + Option + P + R to start with the OS utilites. I tried several different keys combinations and nothing worked but the C. So I booted it again with the C key. I installed the OSX Leopard again but now, when I turn the iMac on, it will go to the desktop screen just fine BUT it is frozen still. The mouse cursor is at the loading colourful ball and I can't use nothing, it just stays there forever! Like, I can't even click at the Macintosh HD folder or the at the Finder in the menu. It is really frozen at the loading cursor ball and it stays there forever.
Does someone know at least what is causing this?
How can I solve this problem without going to Apple Care? I do not have the money to leave it there, since the Apple Care in Brazil it's expensive.
Please help! I would be forever glad!
PS: If there is any doubt, this is the loading cursor I was talking about, and it's driving me insane!!!

Check out: Troubleshoot the spinning beach ball/freezing & crashing
Troubleshoot the spinning beach ball
Mac OS X (10.6.4)
After you get the beachball problem resolved....
Use Software Update or the OS 10.6.8 combo update to update your OS. Also, update everything SU has to offer for your computer. When done, repair permissions and restart your computer.

IMac randomly frozen at grey Apple logo screen.

Hi Guys,
I need your help.
My iMac randomly freezes at startup, at the grey Apple logo screen... some vertical black bars appears, the image is unclear and doubled. The round icon showing that the system is loading freezes. Some times, a black screen appears asking for the computer to be restarted.
I need to power off the iMac for 7-8 times and then it comes to normal till the next boot.
One time, a month ago, the same happened when I was already in leopard, but since then nothing. Now, in the last week, it's happening in 80% of the startups.
Any idea?
Thanks !!!
Andrei

1. Have you installed any third party RAM? If so try removing the third party RAM and install the Apple original RAM for testing.
2. Disconnect all external devices during testing. This means hard drives, ipods, printers, scanners, and hubs.
3. Boot to your install disk. Insert the install disk and hold down the "c" key at startup. Once it boots up select your language but instead of going through the install process go to the Utilities menu at the top select Disk Utility. Select your hard drive/Mac volume on the left then under the First Aid tab click Repair Disk. If that passes/repairs successfully Repair the Disk Permissions. Once this is finished go back to the Utilities menu, select Startup disk, choose your Mac OS X volume and click restart.
4. If you are still having issues insert your original gray iMac install disk, restart and hold down the "d" key. This will boot you to the Apple Hardware Test. Run the Extended test.
George

Help Please! Imac is frozen...Reboot problems

Hi,
I am using an Imac - Tiger version 10.4.9. I was having problems viewing some avi files so I tried downloading Quicktime for this version of OSX. After installing the software and re-starting my Mac, it starts but nothing works. All the information & files have gone missing from my desktop and I cant use any applications. I have tried re-starting a number of times but nothing changes. I thought I would be able to re-install the Apple software from disc but after inserting the OSX disc into my mac it doesnt read it.
Can anyone help me? What can I try next?
Thanks
Chris

Have a look at this: http://grandperspectiv.sourceforge.net/
It will show you exactly what is taking up all of your space.
You also may want to consider some kind of external storage just for your video projects.

My iMac is frozen won't respond after restart

I accidentally went to drop a photo I thought in email then my system froze. Colorful wheel just wouldn't go away. Then I tried to restart when I logged into my account tried to click on I photo and my computer is frozen won't do anything

Aha that's a critical clue. You have just narrowed it down to a software problem in your user account. I'd recommend opening the Console and looking for the offending issue.
http://www.thexlab.com/faqs/checkconsole.html
You can also open Activity Monitor (Applications - Utilities - Activity Monitor) and check to see if any processes are hogging %CPU or RAM. If you find one that is the issue.

Imac is frozen

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