Intel Mac :: Does Not Reboot After Restart (Hangs On Gray Screen)

Apr 14, 2012

It hangs on a grey screen, and I have to press the power button to restart again.

Info:
3.06GHz Intel Core 2 Duo 24-inch iMac, Mac OS X (10.7.1), Phone: iPhone 4 Camera: Canon SD990

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OS X Mavericks :: Getting Gray Screen When Restart Mac With Command Reboot

Sep 2, 2014

When I restart the mac with the command "reboot" of the finder. I have a gray screen and nothing more. If I use the command "Turn off" and I turn on the mac by the start button it works.

Mac pro : 10.9.4, 2x2,8 ghz DDR2 FB-DIMM

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Intel Mac :: Stuck At Gray Screen Display After Hard Reboot

Mar 17, 2012

I have a new imac. I was stuffing the web, tried to upload a picture, the website locked up, so I hard booted my iMac. Then when it came back on, and I get is the start up sound, and a gray screen, nothing else. Its been 5mins now!

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Intel Mac :: Hangs On Gray Boot Screen After Recent WiFi Update

Feb 28, 2012

27 inch iMac running Lion OSX. Installed the recent wifi update that popped up in software update and now the iMac hangs on the gray boot screen.

Info:
iMac (27-inch Late 2009), Mac OS X (10.7.3)

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Intel Mac :: Gray Screen Scroll Down And Then Ask To Restart?

Apr 15, 2012

bought a new i mac and while using had a gray screen scroll down slowly and then said I had to restart the computer it is now happening more ofter and do not know what is causing it

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MacBook Pro :: Gray Screen On Start Up / Won't Reboot

Jun 17, 2014

I bought a used MBP (early 2011) with OS X 10.6.8. It's been running just fine, but last night moving files the screen suddenly went black. I rebooted and it will come up to a gray screen and then sit there. The fans start revving up and it gets really really hot. Of course I haven't done a backup recently, so I need the information on the computer.

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OS X :: Macintosh II Hangs On Gray Startup Screen

Jun 27, 2009

I have an old Macintosh II that someone gave me. It powers on but when it gets to the gray screen right upon startup, it hangs there and never shows the "?" Anyone knows why it does this? What can I do about it? Thanks.

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MacBook :: Hangs On Gray Screen - Apple Care?

Mar 26, 2009

A friend of mine has a black MacBook and it stopped working. When I switch it on there is just a grey screen with the Apple "doing" but then nothing happens. I tried some key combination to reset the NVRAM but it didn't help. The MB was purchased around 2 years ago with the Apple Care extension of + 2 years so it still should be covered by Apple Care. My questions concerns the Apple Care since I don't know how it works: - my friend says that he just bought the Apple Care extension when he ordered the MB and that"s all. Does it need to be somehow "activated" so that the MB is covered ? He has the Apple Care box but he never opened it. - Does he need the MB order bill to make Apple Care work ? - The MB was purchased in France but he's now in Germany. Can we just bring it to a Apple store here?

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OS X :: System Running Very Slow / Hangs At Gray Screen Ion Startup

Jan 29, 2010

Macbook Air, Rev A. Worked like a charm for 1.5 years.Upgraded to a Rev c SSD and gave the Rev A to the wife.She installed NOTHING.Within a few weeks it started running VERY slow. I'm talking 2 minutes of beach ball per click.I use Disk Utility to check the drive. No problems of any kind.

Rebooting would take -- and I'm not exaggerating -- over an hour. First it would sit with a grey screen for 5 minutes. Then with an apple logo for 10 more. Then with the little spinning circle for 30. Then the desktop background would show up and sit for 20 minutes, etc.

Was gonna upgrade to Snow Leopard so what the heck, backed it all up and installed Snow Leopard. To my surprise, it instaled Snow Leopard on top of the old OS -- it kept all the files around so no need to restore from backup.

Speed problem SOLVED!Then a few weeks later the same problems.This time I check the drive AND run the hardware test. No problems.I ERASED the entire drive. I installed Snow Leopard.All is good for a few weeks.Then the problem came back a 3rd time.

I go to reinstall a 3rd time and Snow Leopard doesn't even acknowledge that there's a hard drive in the machine! And when I look in system profiler it says there's no drive of any sort. Yet it will reboot and run... just VERRRRRYYYY slowly.

I'm ready to replace the drive with a Runcore SSD or some such other device but I want to be sure the problem is the drive and not some other aspect of the hardware (motherboard, RAM, etc.)Anyone ever seen this? Anyone have any ideas as to how to investigate, solve, conquer, save myself from madness??

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Mac Mini :: System Hangs At Gray Screen On Shut Down / Beach Ball Delaying Certain Processes

Sep 1, 2009

I have the 2.53ghz with 4gigz of Ram MacMini from Xmas 2009.A few of you know that I had been trying out different SSD's before finally jumping on with OWC 60gig SSD. I've had it for about 2 months now and it works great except I've recently been having my computer freeze and the beach ball of death appears constantly when on Safari and sometimes iMovie. After shutting down the computer manually, sometimes booting up will leave me at the grey screen for minutes before i shut it down and wait maybe 30 mins before i fire it up again, which usually works 9/10 times.

I also noticed the beach ball delaying certain processes like loading Safari or a webpage. For example, I have my OWC External hooked up via FireWire800 with just my music and videos, however occasionally if im browsing thru websites or loading a program it'll cycle the external and have the beachball as if trying to load something before proceeding. It is more an annoyance than a problem.

I ran disk utility on all my drives as well as the Apple Hardware Test CD to see if maybe my Logic Board was the problem. I did the general test as well as the indepth test, both show negative signs of a problem.Can anyone shed some light on what could be the problem?Should I put the factory drive back in and take it to Apple to run their diagnostic test?Could the SSD be failing? (I could RMA it, but didn't know if its an Apple issue vs OWC)

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OS X :: Restart Computer After Gray Screen

Jun 19, 2009

im getting a message on a grey screen asking me to restart my computer when i'm trying to start my imac? So, i hold down the on / off button to do a hard restart and i get the same message again.

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Mac Pro :: Get A Matte Gray Screen On Restart, OS 10.7.3

Mar 15, 2012

After installing updates, I restarted my Mac and it ends up with a matte gray (cloth-like appearance) with a gray Apple logo, but does not get to the desktop. I can open/close the DVD tray, and have cursor control, but nothing else seems to work. Short of reinstallation of Snow Leopard, what are my alternatives. I did the Lion update online but do not have a system disk, hence reversion to Snow Leopard is my only option. 

Info:
Mac Pro, Mac OS X (10.7.3)

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OS X :: Screen Goes Gray & Message Tells To Restart

Jun 19, 2007

I'm frequently getting the problem that: many times the screen goes grey and a message box appears telling me that I have to restart. Often this is preceded by the fans gradually increasing in speed until they are runing at maximum speed. BUT the fans behaving that way is NOT due to overheating. I have to use the restart button to make the Mac restart. I have used reset button to reset the motherboard but that did not cure the problem. Anyone have any ideas about how to cure this problem? I'm running 10.4.9. The mac is a dual 1.8 (June 2004). 1.5GB RAM, two SATA internal HD�s (Maxtor), two external firewire HD�s (Seagate). All the HD�s are less than a year old.

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MacBook Pro :: 13.3 - Screen Goes Gray - Restart System

Mar 23, 2010

Im new to these forums. I have just (5 months) purchased a new Macbook pro. I have upgraded the RAM to 4GB, but only recently since ive been in Canada (1 month) experienced this problem. The screen goes grey once a day and the computer asks me to restart the system. I believe its called a Kernal Panic. Ive read on other places that it might be caused by recently installed apps. But i have got rid of these and now nothing has changed! I havnt got my Install CD on me therefore cannot run a reboot. Im not sure if the issues are related but the Mac also kicks me out and makes me log in again. this doesnt happen as frequently but is still concerning and rather frustrating.

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Mac Pro :: ITunes Causes Gray Screen On Shutdown / Restart

May 4, 2012

I recently noticed that when I shutdown/restart my MBP, i get stuck in a gray screen with spining wheel. I can't remember if and what i instaled, but I know that this problem happens when I open up ITunes and keep showing up even when I close/force quit manually ITunes.

Info:Mac OS X (10.7.3)

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MacBook Pro :: Screen Goes Gray And Push To Restart Itself?

May 5, 2012

Its screen goes gray and push to restart itself.

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OS X :: Randomly Popping Up Gray Screen - Restart Computer

Aug 3, 2010

My computer has started randomly popping up a grey screen which tells me to restart. It keeps happening and obviously something is wrong. Not sure if it is a hardware failure but something's broke! Anyone know what the deal is? Here is my latest panic log:

Latest stack backtrace for cpu 0:
Backtrace:
0x000954F8 0x00095A10 0x00026898 0x000A8204 0x000ABB80
Proceeding back via exception chain:
Exception state (sv=0x2D9C6780)
PC=0x00306440; MSR=0x00009030; DAR=0x9C95F6DC; DSISR=0x40000000; LR=0x003063BC; R1=0x1787B9C0; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x003063BC 0x002B7FCC 0x004EE0A8 0x004EDB9C 0x004EDA20 0x00465CCC
0x0049A634 0x0049A338 0x0049B6E0 0x0049BA14 0x002D1B8C 0x002D0A54 0x000A9714
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AppleUSBTCKeyboard(1.3.0f1)@0x4ec000
dependency: com.apple.iokit.IOUSBFamily(2.8.1)@0x463000
dependency: com.apple.iokit.IOUSBHIDDriver(2.5.5)@0x4e6000
dependency: com.apple.iokit.IOHIDFamily(1.4.13)@0x4a5000

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Software :: Can't Get Past Gray - Need To Restart Computer Screen

May 12, 2010

I have a few month old iMac 27" i7 quad core for music use and did an update this morning which consisted of an itunes update and update to the screen firmware and two other things I can't remember. Do the usual install and restart business and am now met with the following error:

------------------------------------------------------
panic(cpu 0 caller 0x558271): "Unable to find device driver for this platform: "ACPI".
"@/SourceCache/xnu/xnu-1504.3.12......................
Debugger called: <panic>
Backtrace (CPU 0) , Frame: Return Address (4 potential args on stack)
7 lines of numbers and letters (please let me know if you need these)
BSD process name correspoding to current thread: Unknown
Mac OS Version:
Not yet set
Kernal Version:
Darwin Kernel Version 10.3.0...............

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MacBook Pro :: Goes To Black Screen After Gray Bar Loaded (after Restart)?

Sep 6, 2014

My mac wont on (goes to black screen) after a gray bar that usually shows after restart has been loaded. What should I do?I already tried the safe mode and it's not working ...

Info:
MacBook Pro, iOS 7.1.1

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Software :: IMac Not Booting - Restart Message On Gray Screen

Dec 1, 2005

I just bought a iMac M5521 from a friend and it won't boot. It looks like it's about to start up and then it goes to a gray screen and tells me to press the reset button or hold the power button, and it says that in like 3 diff. languages. What do I do? I'm a PC guy and know nothing about Macs.

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Software :: Stopped Booting - Gray Screen - Restart Computer

Jan 22, 2010

my dual 2.3 ghz G5 power mac with 3.5 gig memory running 10.4.11 started crashing (grey screen "you must restart your computer...) and soon stopped booting. suspecting the hard drive as it had been noisy for some time I ran "repair disk" in disk utility from my mac book (connected by firewire, G5 booted as target) and it booted again but soon crashed again and after a couple more crashes it would not boot and attempts to repair failed. I installed a brand new hard drive, installed osx 10.5 and updated it to 10.5.8 and it seemed to install and boot fine but while trying to burn a .dmg dvd with toast (10.0.5) I got the grey screen anain and repeated attempts to burn a disc with the same .dmg resulted in a crash every time. it has also crashed while downloading, playing back itunes hd video, and using an "eye tv hybrid" tv tuner as a dvr. below is the most recent crash log - note that most of them have referenced cpu 0 although the most recent it's cpu 1 -THANX & PLEASE HELPInterval Since Last Panic Report: 0 sec Panics Since Last Report: Anonymous 4A58CF1E-844-409F-8BF3-65A3A3CD2E79.......

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OS X V10.6 Snow Leopard :: IMac Can't Update To 10.6.8, Get A Gray Screen On Restart?

May 20, 2012

I have been trying for weeks to do a software update from 10.6.7 to 10.6.8. Whenever I install the update and restart my computer, I get the apple logo loading screen and then it locks up on the infamous blank gray screen. I have been able to get back to 10.6 with the install CD, and can then update all the way to 10.6.7 I have tried everything listed here:[URL]To no avail . including a clean install When I start up in verbose mode the last line of text I get is the following, after this it's the gray screen:

** Device in slot: SLOT--1 ** RBIOKitController found 0x5ac :0x842 Those last two chunks of numbers change each time I restart.  

Here are my specs:

Core 2 duo
ATI Radeon HD 2600 pro
4gb ram 

Info:
iMac, Mac OS X (10.6.7)

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OS X V10.7 Lion :: Gray Screen After Restart - Permission Errors In Disk Utility

May 10, 2012

In fact I'm getting a grey screen when I just try to restart. Have run Disk Utility (which always finds Permissions errors - even though it appears to make repairs. Also, after erasing my hard disk and recovering my user data from Time Capsule). When I restart I don't get beyond a grey screen (with moving cursor). I can't install the update as obviously I need to restart in order to start the install process.

Info:
iMac (27-inch Mid 2010), Mac OS X (10.7.3)

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OS X :: Apple Grey Screen And Hangs, Gets To The Login Screen And Hangs?

Jul 13, 2010

I have a much loved ibook G4 14" (late 2004??). It has just died. Well, in so much as it won't boot up. The ibook either gets as far as the apple grey screen and hangs, gets to the login screen and hangs, actually loads up finder etc and hangs or none of the above. Sometimes flashing red, blue green black.

After lots of research online over the past few days I tried the following: I have tried safe mode (not working), starting the command prompt screen (single user and verbose modes), started open firmware, and tried booting from a CD. Nothing works as the boot gets so far then hangs. I have flashed the PRam, resetted the NVRam, and have stopped short of opening up the case to dismantle it!

I just really want to access the hard drive now. I have tried Target disk mode and linked the ibook (pressing T) via firewire to a PowerPC G5, but the G5 doesn't recognise the ibook. System profiler on the G5 shows the target mode connected and working fine via firewire, just the icon for the ibook/target doesnt mount on the G5 desktop so I cant access it.Currently the boot freezes within a couple of minutes.I tried the hardware test CD that came with the ibook years ago, I have also tried booting from an OSX Panther CD. I'm assuming they would be bootable.

I forgot to mention that in linking with the G5 in target mode, a disk that I put in the ibook drive appeared on the G5 desktop as an external drive, therefore I wonder why i cannot see the actual ibook drive mounted. The CD drive works as it mounted on the G5.Does the ibook have an actual PRam battery that can be replaced? Maybe this is an issue?Am I able to actually remove the hard-drive and access it as an external drive somehow?

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OS X :: Gray Screen After Restart Between Disc 1 And Disc 2?

May 24, 2009

So last night, my Macbook started to show a folder icon with a question mark on it when I tried to boot it up. I tried to restart a couple different ways, using the Install disc, and when nothing worked, decided to reinstall OS X entirely.

Well, after the first disk finished installing, it said to restart the computer and be prepared with disc 2. Unfortunately, after the restart, I just get a blank gray screen, while my optical drive makes short repetitive noises.

Any advice on how to get the reinstall to work right?

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Intel Mac :: Gray Screen Can't Do Anything?

May 9, 2012

I have an 2008 iMac that displays a gray screen. I cannot get rid of it. I have done a forced shut down but it wakes up when a key is depressed. I have turned off the power. It will chime but a gray screen, not a spinning wheel or anything else. I was told it might be VMWare Fusion at fault so I uninstalled the program a month or so ago. It was fine until a few days ago. Has the display panel died? If so, is this a dyi or should I pay $$$ to repair it. 

Info:
iMac, Mac OS X (10.6.1)

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Intel Mac :: Reboot Message Scrolling From Top To Bottom After Black Screen

Jun 24, 2012

I have a late 2006 iMac that has just started giving me a message to reboot after a black screen comes down slowly from the top top of the screen to the bottom. I reloaded software and restored from Time Machine, but it keeps happening, now several tomes a day.

Info:
iMac, Mac OS X (10.7.4)

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MacBook Pro :: It Hangs Up On Restart

Mar 27, 2012

All my late 2011 Core i7 MacBook Pro hangs up at the grey screen when i try to shut it down or restart it mostly it gets stuck on restart...

Info:MacBookPro, Mac OS X (10.7.3), Core i7 Thunderbolt

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Intel Mac :: Horizontal Gray Line Across Screen?

May 21, 2012

This evening, quite suddenly, a gray (or black, depending on what's on the screen) vertical line has appeared across my imac screen, about a quarter of the way up from the bottom.  Above that are some are three, much lighter lines (more like subtle variations or blocks of colour running across the screen). These appear on all windows I open.  I took a screen shot using grab and the very definite gray line doesn't appear.

Info:
imac, Mac OS X (10.6.2)

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Intel Mac :: Gray Screen Spinning Wheel

Jun 11, 2012

Gray screen spinning wheel. How do I get it to start?

Info:iMac, Mac OS X (10.6.8), Ernestine123

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