Software :: IMac Starts Itself With Reboot Screen
Jan 9, 2009
In the last three days my iMac desktop has begun starting itself up. There is an audible beeping (three or four beeps) and the on/off indicator light blinks rapidly. When the screen comes up there is no desktop but a gray background with reboot instructions. When I type the reboot words "mac-reboot" the desktop comes back.
Under Logs in the system profiler I see the following message:
CGXDDisableUpdate:Updates disabled by connection 0x66-3 for over 1.000000 seconds
and
CGXBlindSurface returns-536870210
The computer is rather old, is running OS X 10.2.8 and has never done anything like this before.
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Jun 17, 2014
Computer suddenly stops working and starts to reboot, Computer suddenly stops working and starts to reboot
Info:
MacBook Pro with Retina display, OS X Mavericks (10.9.3)
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Aug 25, 2009
After every reboot, the brightness of my iMac's screen changes to 100% brightness, which is slightly annoying. Does anyone know why this happens? By the way, I'd say it does it since 10.5.8.
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Jul 23, 2010
All of a sudden, every time I reboot, my screen's brightness is all the way up. So, I go to 'Preferences' and bring it down to only happen again the next time I reboot. Not a terrible problem, I hope, but not sure why the settings of this doesn't remain as I left it last. Perhaps I have picked up something OR I have a fault which could get worse?Anyone seen anything like this?
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Aug 22, 2014
Mac won't boot, starts with white apple screen and spinning wheel. Also has grey loading bar which disappears after loaded then stays at white apple screen.
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May 24, 2012
I came back from work to wake up my iMac. It made the noise but the screen stayed black. I tried restarting by holding the power button- I can hear it start and the chime but still have a black screen. I tried resetting the pram, and unplugging the cord but I still get a black screen. I can hear the chime though; I'm not sure if that means anything. I just had the hard drive replaced in February so I hope it's not that. just wanted to clarify that when I restart, I get the chime but the screen stays black- I don't get to the grey screen. So I'm assuming right now that my display may be shot?
Info:
iMac (20-inch Mid 2007), Mac OS X (10.5.8)
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Jun 27, 2014
Computer starts (keyboard lit, music plays, caps lock light on), but no screen. I need to open and close 2 - 30 times before the screen will turn on. Once on, the computer works perfectly. I've tried PRAM and safemode reset.
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May 25, 2010
I forgot my admin password on my iMac recently and so i used the reboot with OS X snow leopard install disc to reset the keychain, but now on my login screen, it used to be just my account name, there is one called "Other" so i went into accounts in system preferences and tried to delete it but it isnt there?is really annoying me p.s. the "other account" isnt actually an account it says "Other" and when you click on it asks for your username and password...so i type in the admin accounts name and password (admin account is the only one on this computer), and it just opens up my admin account.
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Jul 19, 2010
My Macbook is brand new! (Barely 4 months old) Just recently my laptop will flash a black screen. It starts from the bottom and quickly flashes up the screen higher and higher each flash! i have read on some other pages it is a bad inverter on the inner core of the Macbook. Other than that I do not know what to do!
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Dec 6, 2009
Mac starts up and then a blue screen appears and nothing else happens. After waiting 10 minutes the safeboot login comes up I put in my correct password but then it takes me back to the login again.
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Apr 17, 2012
It's not the keyboard sticking.
Info:
iMac, Mac OS X (10.5.8)
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Jun 4, 2014
I hear the start tone but no light on screen
Info:
MacBook Pro with Retina display
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Apr 24, 2008
After the screen saver starts (set to go on after 1 hour), my MacBook locks up 90% of the time when I attempt to wake it up. I sometimes hit the trackpad and sometimes I hit command. It is hit or miss on which one will work.
I have to hold the power button to restart it.
I have it plugged in all the time when it's at home. Under energy saver I have both settings set to go asleep after 2.5 hours.
I have no issues when I close the lid to put it to sleep.
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Nov 13, 2009
After installing windows 7 on my new iMac the system wants to reboot, so i let it. When it does, i press down the option key and choose it to start in Widows, but now the screen turns black, and windows never starts. i dont know what to do.
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Feb 17, 2012
Mac book pro starts up but screen stays black. I have tried taking the battery out, waiting over night it still is black
Info:
MacBook Pro, iOS 5.0.1
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Apr 27, 2012
I have had my imac 21 for about 5 years Model identifier say 7.1. running OS 10.6.8 Has been going well apart from a new hard drive. Suddnely tonight the screen flickers when you first turn it on for a few minutes and then settles down but dims down where whites become a light grey. Tried turning off the monitor screen power off and power saver.
Info:iMac, Mac OS X (10.6.8), ilife 11
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Jul 5, 2010
Every time I moved my MacBook Lid my screen turns off and starts to flicker? Is there anyway you think i will get covered I haven't got any warranty left in it either.
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Oct 17, 2009
I have a problem with my iBook. I press the power button, it starts but the screen remains blank.
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Apr 30, 2012
I have a 2007 or so Macbook Pro that when I turn it on, it "dings" and sounds like it's starting up but then the screen is just BLACK. This happened before, about a year ago, so I don't want to fix it as I think it will just keep happening. My question is, can I connect a dual-USB to it and my iMac to transfer files from it? Or how can I get my files off my MBPro to my iMac without spending $$$ to get a pro to take out the hard drive and etc.?
Info:
MacBook Pro
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May 10, 2012
My 2007 MacBook is starting up and making all the right noises but the screen stays black - looking on different forums it seems likely it is either the back light or the inverter that need fixing but in the meantime there is some things on there I need - I have an IMac as well and I have tried to connect the too so that I can view the macbook on the imac - I used a firewire cable and held down the t key on the macbook (but obviously couldn't see if it had worked) I then turned on the Imac and held the option key down but it only give me the IMac HD to start from and not the Macbook
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Apr 18, 2012
Just placed a new harddrive in my macbook pro and had the geeks at the Genius bar to install the OS system. Now I'm dealing with a clicking noise and a grey screen with a question mark on it. Tried to place the install dvd in and boot from the it won't. I did notice after going to the Disk utility that my hardrrive isn't recognized.
Info:Mac Pro, Mac OS X (10.6.5)
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Oct 12, 2010
I just purchased a 20" Samsung SyncMater P2050 LCD monitor to hook up to my Macbook. I also bought the mini-DVI to VGA adapter, the cabling is right. After powering on the Samsung and booting my MacBook the Samsung is recognized and the snow leopard desktop comes up on the Samsung. I am able to get to the monitor set up in the preferences window, and move the external monitor to where I want it. After a short time the Samsung screen starts pulsating, first at the out side edges of the display, it progressively gets worse, ad then the screen goes black. This happens every time after I shut down the Samsung, and then power it back on.
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Apr 5, 2010
I was reading a recipe the other night and my Macbook started ticking, the screen went black, then a white screen came up with a blinking envelope with a "?" in it. This happened once before when the computer was about a year old. I took it to the Apple store and they repaired it. The problem is that store is 2 hours from me. Does anyone know what this is and how to fix it? I have hit different keys and nothing takes me out of that screen. My biggest concern is my pictures and music are on it. I plan to buy another computer (anything but Apple) if I can't come up with a fix for this. Is there any way to get my music on my Iphone onto another computer?
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Feb 25, 2006
I have a G4 MDD Dual 1.42ghz, When I hold down the Command-Option-P-R keys during restart it doesnt do anything. It keeps going straight to the gray screen and starts up. I dont know what to do. Anyone know whats the problem? Also my computer cant wake up from sleep or even go to sleep all the way.
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Mar 31, 2012
My dest top is not showing after boot up however, some message pop up and screen saver works. Last massage i had was hard drive is almost full?
Info:
Mac OS X (10.5.8)
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Aug 30, 2014
When I turn on computer it starts with a white screen with 5 purple stripes. These turn to a full screen of purple squares.
Info:
27, Other OS, iMac11,1 Intel Core i5 2.66GHz
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Dec 6, 2014
My MacBook is making the startup sound but goes straight to a black/dark grey screen. In other words you can see the screen switching on but it's blank. It's in charge mode, has no other external peripherals attached and it's updated to most recent OSX Yosemite.
I only purchased it in May of this year (refurbished). I have tried booting in to safe mode but again the screen remains the same. Â
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May 27, 2009
Imac has all the updates before I partitioned with bootcamp (52 GB) I inserted a Win 7 Pro 32 bit disc (OEM from newegg). It installed windows and auto rebooted, windows came up and auto booted again. All I got was a black screen, I think it just turned off. I tried powering the machine on and booted to windows, but a message asking if I wanted to boot normally or go into safe mode. Does anyone have an idea why I can't get past this step?
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Dec 11, 2009
Imac has all the updates before I partitioned with bootcamp (52 GB) I inserted a Win 7 Pro 32 bit disc (OEM from newegg). It installed windows and auto rebooted, windows came up and auto booted again. All I got was a black screen, I think it just turned off. I tried powering the machine on and booted to windows, but a message asking if I wanted to boot normally or go into safe mode. Does anyone have an idea why I can't get past this step?
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Feb 9, 2012
My wife's macbook pro, 2010 circa, is not rebooting. With three attempted power-ups she gets a grey screen with the Apple logo...
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