IMac (Intel) :: Mavericks Freezes At Login Screen?
Jun 2, 2014
My iMac started freezing at the login screen. I power up, the apple logo comes up (sometimes the blinking globe comes up for some reason) and then the apple logo flashes as if it restarted or something, and the loading indicator shows up for a few seconds. Then at the login screen everything looks normal (my picture is there and correct name of account is shown) when I type the incorrect password, the text box shakes appropriately. When I type the correct password, the loading indicator appears, the mouse turns into a beach ball, and it hangs until I hard shutdown.Â
I know it's not a hardware issue because I just booted from the recovery partition and was able to view all my files in terminal. I would rather not reformat the hard drive. Is there a specific file that may be corrupted that I could delete and mavericks would automatically rebuild it?
Info:
iMac, Mac OS X (10.7.3)
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Mar 30, 2012
I just bought a LaCie 3TB external. When i turn my computer on and I'm at the login screen my trackpad and keyboard are frozen. When I unplug the LaCie (i know really bad) my mouse and keyboard start working again. Is the LaCie trying to work as my primary drive? Is that why it freezes my mouse and keyboard? How do I work around this (besides unplugging it from the computer)??
Info:
iMac, Mac OS X (10.7.3)
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Jan 31, 2010
I have a Mid-2007 Mac Mini and I've noticed every couple days, when I log out of the secondary account, it takes a relatively long time to return to the login screen. The blue screen sits there for maybe 30 - 40 seconds, but then when it returns to the main screen the whole machine freezes. The only thing I can move is the mouse, I can't click any of the buttons such as restart, sleep or get back into my account. I always have to do a hard shutdown.
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Aug 25, 2014
Since the last itunes update (May be a co incidence) , my 27" Mac keeps crashing with a white screen and flickering  It then wont restart most times, even when using boot up options such as option, Cmd P+R. even removing power!waiting and restarting etc on most restarts wont work its a white screen.
Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.4)
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Jun 2, 2014
I was off of my iMac for an hour or two so my screen saver when on. I went to wake the computer and it was frozen. I tried using the keyboard and mouse to wake up the computer from the screen saver, but it would not work, so I powered the iMac down manually from the button on the back. I let it sit for 15 minutes, then I tried to start the computer up again. Now at start up, I get to a blank white screen with the spinning moving pin wheel, and that is it.Â
Info:
IMac 2Ghz Intel Core Duo, Mac OS X (10.5.7)
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Dec 3, 2014
How do i get out of the white screen after signing on to my computer.
Info:
iMac (24-inch Early 2009)
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Jun 29, 2012
I have a mid-2010 MacBook Pro and I've noticed several freezes on the login screen: it gets on the login screen and the multicolored spinning ball appears and you are not able to authenticate.. The only thing you can do is to force a shutdown with the power button. I always see this messages before the forced shutdown:Â
29/06/12 21:53:05,000         kernel         NVDA(OpenGL): Channel exception! exception type = 0x6 = Fifo: Parse Error
29/06/12 21:53:05,000         kernel         IOVendorGLContext::ReportGPURestart
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Info:
MacBook Pro, Mac OS X (10.7.4), 8 GB RAM - 256 GB OCZ Vertex 4 SSD
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Jun 3, 2014
My iMac starts, takes about 10 minutes with apple logo & timer/progress bar then just switches off .. How to get it to the login screen?Â
Info:
iMac
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Sep 4, 2014
My Mac does not start, the mouse freezes in the left corner of my screen and displays a block break?
Info:
iMac, OS X Mavericks (10.9.1)
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Jan 8, 2010
Today my imac done something wierd. When powering on it got to the blue screen before the password login and it just froze on the blue screen. I done a hard restart and rebooted a few times. Didn't do it any more after that.
Should I be worried? It's only a few months old.
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May 14, 2008
Got my 24" 2.4GHz iMac on release last year, with Tiger. Installed Leopard on it on release day.
The problem I have is that ever since a botched Boot Camp installation I've had endless problems with certain applications hanging during their startup (notably Image Capture) or refusing to quit (notably iTunes). Force Quit doesn't resolve these issues. Restarting doesn't work because Force Quit can't quit them so I have to pull the plug or otherwise force a shutdown.
Upon restarting I either get the grey screen that instantly appears, or, if I've pulled the plug and left it for a few minutes I can get to the Apple symbol but no spinner or any further start up action. Occasionally I get lucky, get back up and running, and all is well until the next crash.
All this started happening when I decided to try installing Windows on Boot Camp again. I've had it on here a couple of times since Leopard was released but usually end up deleting it eventually because either the Windows installation gets bogged down or I get bored with it and never use it. Anyway, this time, using the same discs I've always used (and yes, it's SP2, so it should be fine and anyway it's worked at least twice before) when I got to the 'restart to continue installing Windows' bit, I got the white screen and nothing happened. After an hour or so of praying and restarting endlessly trying to get a response, I finally got it to recognise my OSX installation and was up and running again. The Boot Camp volume didn't appear to be there and Disk Utility revealed zero problems whatsoever. Everything looked fine until these recurring hangs, refusals to quit apps and screwed up start-ups.
Any ideas? I don't have the expensive Apple support, but it's less than a year old! Of course, I realise that this means nothing to Apple, who seem to think I should pay a premium in order to have my machine warrantied by them for more than 90 days. Grr...
If I get it up and running I'm thinking I should just wipe the ENTIRE system absolutely clean and re-install Leopard and then use my Time Machine backup to put all my data back on (pricelessly valuable as I use the machine to work on my photography with), but I'm concerned that if there's a flaw in the System somewhere, a corruption, that installing the Time Machine backup will just reintroduce the error. On the other hand, if it's a deeply embedded and invisinle partition corruption from the bad Boot Camp installation attempt, that should be fixed by wiping the entire drive to reinstall Leopard, right?
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Jun 6, 2014
I recently updated by 2013 27" iMac to OS X 10.9.3 and since then, I have a weird problem when I switch from one user to another: I often have several user sessions opened for several account, and when I switch from one to the other, or go to the login screen and open an already open session, I find the windows I had left open resized and/or moved. They're often moved to the upper left corner, and resized as if the screen was much smaller than it actually is. It worked without any problem in OS X 10.9.2…
Info:
iMac, OS X Mavericks (10.9.3), Late 2013, 27" screen, 32GB RAM
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Jun 3, 2014
My imac screen has gone black?
Info:
iMac, OS X Mavericks (10.9.3)
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Sep 10, 2014
I got a new Macbook Pro Retina (mid-2014) a few weeks ago and the trackpad and screen randomly freeze even when the only thing I have open is Safari. In other words, it doesn't feel like my computer has a 2.6 GHz Processor and 8 GB 1600 Mhz Memory. My downloads folder also constantly has the loading bar under it; it goes away when I remove it from the dock and replace it, but appears again after downloading one thing.
This is really frustrating when I got a new Macbook so that I wouldn't have to deal with these types of problems. They're all issues that I never encountered with my Macbook Air (mid-2011).
Info:
OS X Mavericks (10.9.4)
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Sep 7, 2014
My iMac has recently begun freezing momentarily. First it will freeze for a few seconds (while still allowing the mouse to move). It will resume, and then a minute or so later it will freeze again for a slightly longer duration. During this time, I can move the mouse, click on things, but nothing responds. Music and videos pause and then resume, websites stop loading, not able to type, etc. In fact, it just happened while typing that last sentence.Â
Here is my Etre: EtreCheck version: 1.9.15 (52)Report generated September 7, 2014 at 10:17:19 AM CDT Hardware Information: ? iMac (27-inch, Mid 2011) (Verified) iMac - model: iMac12,2 1 2.7 GHz Intel Core i5 CPU: 4 cores 12 GB RAM Video Information: ? AMD Radeon HD 6770M - VRAM: 512 MB iMac 2560 x 1440 System Software: ? OS X 10.9.4 (13E28) - Uptime: 5 days 18:36:51 Disk Information: ? ST31000528AS disk0 : (1 TB) S.M.A.R.T. Status:
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Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.4)
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Jun 1, 2014
I installed Mavericks and it restarted and now it is stuck on the apple screen. I've tried to reinstall and it gets to the same point. I should've have back up my Hd but did not do this. Is there any way to access my drive and save the files?
Info:
MacBook, OS X Mavericks (10.9.3)
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Jul 1, 2014
Last night I updated my iMac to Mac OS X 10.9.4. Whenever I'm using my computer, it freezes up. How can I make it fast and smooth again? I have a most recent Time Machine backup before I updated. If there is a way to gain my computer's speed again? If not, can I possibly go back to 10.9.3?
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Jun 23, 2014
When i start and work with Logic Pro, it freezes after a while and there is no other way, but to force shutdown.I searched for some crash reports but i couldn't find one so i made screenshots of the terminal..I read on the internet some people had the same problem but with other programs, so i'm pretty sure that "Logic Pro caught burning CPU" is the problem. I got this problem since Mavericks 10.9.3, didn't have this with Snow Lion.Â
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Aug 25, 2014
I am getting the error message "You can’t sign in at this time." when I try to log into my iCloud account. Repeatedly. Even changed the password to ensure it was correct.
Info:
iMac, OS X Mavericks (10.9.4), Safari 7.0.6
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Sep 10, 2014
Mac Pro
Early 2008
Model Identifier: MacPro3,1
Processor 2 x 2.8 GHz Quad-Core Intel Xeon
Memory 16 GB 667 MHz DDR2 FB-DIMM
Graphics ATI Radeon HD 2600 XT 256 MB
Software OS X 10.9.4 (13E28)
Boot ROM Version: MP31.006C.B05
SMC Version (system): 1.25f4
This is the first time I've encountered this. Upon cold booting the machine it went directly to the legacy Mac OS X Server login screen from before the upgrade to Mavericks. It would not let me login with current credentials. I had no choice but to hard power off. It returned to normal operation on restart.
It could be a possible bug.
Info:
Mac Pro, OS X Mavericks (10.9.4)
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Apr 20, 2012
Last night I was working in Adobe InDesign and Photoshop when my screen began to flicker like crazy and eventually froze. I could still move the cursor around but nothing would work. I couldn't force quit any of the applications or shut down the system. It eventually shut itself down and after restarting everything seemed normal. About 20 minutes later it did the same thing as I was switching between Safari windows using Expose'. (I recorded a small clip of the flickering and put it on youtube if that helps: [url]...?v=UBjRwRu4IOg ) After the second time this happened I again tried to start it up and it loaded to a gray screen, no startup chime, no apple logo. Nothing. I hit the power button and it shut down again. And the next time it booted all the way. I then shut it down with the intention of calling Apple Care today but apparently my Apple Care ran out in the last month or so. So, I'd have to pay $49 to talk to them about this issue. I thought I'd come here first.
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Info:iMac, Mac OS X (10.6.8)
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May 21, 2012
Latetly, after I leave this iMac, and the screen saver susequently comes on, I return to find the screen saver frozen. When I move the mouse (cursor) around, it begins to "erase" the screen saver, revealing the login screen underneath.
Info:
iMac, Mac OS X (10.6.8), 27" 2.7GHz Quad i5 12GB mem 1TB
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Jun 4, 2012
My Mac freezes at the sign in screen. I've tried rebooting, shutting down and unpluging everything including power cord, and nothing works.
Info:
iMac (20-inch Mid 2007), Mac OS X (10.7.4)
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Jan 14, 2009
dread going to work and use pc all day. anyway the only issue i have is every so often i will be working away and my whole screen goes blank for a second,,freezes. I have to tap the mouse to get it to come back,
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Jul 11, 2009
I am a Mac-newbie who recently switched from PC to Mac. I know a little about comps and have some experience with Windows and Linux. Now the Mac. I upgraded my iMac 20" (bought it used from a friend) from Mac OS X 10.4 to Mac OS X 10.5 and everything seemed to go according to plan until it came to the re-boot and the comp froze on the blue screen with the movable mouse pointer showing. I tried the apple key with s on boot and did fsck -fy and fsck -f a couple of times. It only shows "The volume MacC appears to be okay". Everytime I typed "exit" to go to the log-in window it still gets stuck on the blue screen. I tried to start it with the installation disk in the DVD drive but now it doesn't eject it either anymore. So, the situation is: I have an iMac with that wont go past the blue screen, with a workable mouse pointer and a stuck DVD in the drive. I am extremely frustrated especially since I do not have a second Mac to read the HD in the iMAc with and I don't have a backup system (except my PC Laptop). What can I do?
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May 29, 2012
I have been having a problem that is not application-specific, and not Lion specific. This only happens on my 2009 iMac 24 running Lion 10.7.4. (I also run Lion on my 2011 MBP and have not had this problem.) It doesn't matter whether I'm in iTunes, Safari, Logic, Pages... running applications alone or in combination.It doesn't happen right away. It's usually after I've been active on the computer for at least an hour. I will try to describe it the best way I can:
1. I could be browsing Safari, for instance. I'll notice that a small section of my desktop starts "growing" red, green, and/or blue pixels. If left untouched, the pixels overtake about 70% of the display until the computer freezes. Now, if i click anywhere on my screen -- in Safari or on the desktop -- whatever the mouse is pointing at will redraw itself. Meanwhile, the screen starts blinking rapidly and basically, has a tantrumI can't Force Quit, Restart, Shut Down, or any other activity. The only solution is to power it down using the power switch.
2. I'm working on music in Logic Pro. When I have Logic running, it usually spans the entire display. Within the Logic screen I'll see a small section of these red, green, and/or blue pixels. (Well by now, I know what's coming so I immediately save my work before the system freezes.) I quit out of Logic, but the pixels continue to take over my desktop. If left on it's own it starts going berserk as described above. Eventually the system freezes and I have to power down
This started happening last month. Two things happend last month: (a) I switched my internet service and combined my internet connection with my land line. I had previously been using a dedicated line for internet. (b) My service agreement expired on the iMac... go figure!
Info:iMac (24-inch Early 2009), Mac OS X (10.7.4)
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Sep 6, 2009
When I turned my iMac on this morning (iMac G5 PPC 10.5.8) it went through all of the "normal" steps (gong, grey screen, apple logo, progress wheel, blue screen) and stopped at the blue screen. Thinking it was just a fluke, I shut the machine down and restarted, only to have it stop at the blue screen again.
After disconnecting everything going into the iMac except the keyboard and mouse, I attempted to boot into safe mode but it stopped at the blue screen again. I tried single user mode too but I didn't get any further than the blue screen.
Next, I flashed the PRAM (big gong, single quieter gong) and afterwards it came to the blue screen.
I reattached my external drive and selected to boot from a 2-day old backup. Using the backup I was able to log into both my regular account and my "test" account (without login items).
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Sep 28, 2009
I have a 3.06 GHz, 4 GB, iMac running 10.6.1. and I have a weird problem: while I was running Windows 7 under Boot Camp, during a simple task, my screen suddenly turned a solid shade of gray. Having no other option, I held the power button, turned off the computer, and turned it back on.
When I booted back to OS X, it happened again immediately upon opening iTunes. This time the color was solid black. Concerned, I turned off the computer, waited a moment and booted it back up in Safe Mode, where I currently have no problems whatsoever. From Safe Mode I repaired my disk permissions, cleared my caches, and zapped the PRAM while restarting my computer back into normal mode. Unfortunately the problem persists, this time my screen turning a solid shade of dark purple.
I'm going to call Apple Care in the morning, but has anyone heard of an issue like this? I searched the forums for a solution, but wasn't sure what terms to search for.
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Jun 3, 2012
My screen freezes up more often and the keyboard shortcuts don't work. I have to manually shut it down. What can I do about it? It's a pain when I'm in teh middle of doing something or chatting in MSN Messenger.
Info:
iMac (20-inch Mid 2007), Mac OS X (10.6.8), HP probs
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Oct 7, 2009
2MHz PPC G5 iMac OS 10.4.11. Several attempts were made to login with wrong password. The iMac is now frozen on the login screen. Entries can be made in the Username and Password fields, but there is no response to "return" or "cmd" keys. The action buttons (sleep, login, etc.) are grayed out. Power button only puts machine to sleep, and it wakes up at frozen login screen.
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