My iMac screen suddenly dark. Cursor works. Display gone? Processor ok?

Screen went dark gray almost black. Cursor still present and moves as should with mouse. Sound controls work, too. Feels like display died? Processor still okay but unreachable? Or is it the reverse?

Problem now fixed with SMC reset. Is this a sign that hard drive or display is going? Have 24-inch, Early 2009 iMac.

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Imac screen went dark after power interruption any suggestions?

My son's imac screen went dark after a power interupption (someone turning the computer off by pulling cord out of electric socket) and I can't get it to go back on. I've already tried depressing the "command, alt,p and r" keys to get a restart, and while it did restart, still no picture on the screen. Occasionally you can see white staticy lines, but mostly it is just dark. I've seen the suggestions to update software and back up data but that isn't possible as far as I can tell because I can't see anything on the screen - it is totally dark! Any suggestions? He is coming home from a trip today and hasn't had any access to computer for some time - he is going to freak

First try iMac SMC and PRAM reset, please do each of them 2x. If that does not work then try restarting in Safe Mode, this will clear some caches. You did not mention the version of OS X running on the machine, if you are running Snow Leopard then install the Snow Leopard disc in the SuperDrive and restart, when you hear the start up tone hold down the Option key and start from the SL disc and run Disk Utility and Repair Disk Permissions & Repair Disk.

IMac screen suddenly turns black

iMac screen suddenly turns black

Suddenly shuts down, after few moments can be started and used again like normal. Started occurring when mouse and key board batteries where low ? coincidence-- batteries now changed but still happened once.

IMac screen is dark

The screen is dark on my 2006 iMac. Is there a way to reset or do I need a new part? Also, what cable do I need to connect it to a MacBook Pro to recover data?

Hi mgtrumpet,
Thanks for visiting Apple Support Communities.
I recommend using the steps in this article to troubleshoot your iMac, starting with the "No video..." section:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
If necessary, try using Target Disk Mode to recover the files on your iMac using the MacBook Pro. See these articles for more information:
OS X Mavericks: Transfer files between two computers using target disk mode
http://support.apple.com/kb/PH13842
Note: The steps in the article above apply to previous versions of OS X as well.
How to use and troubleshoot FireWire target disk mode
http://support.apple.com/kb/ht1661
Best Regards,
Jeremy

IMac screen suddenly oversaturated. ML. Redish-magenta colors

I have my osx system since 2007. i recently upgraded to imac 2012, 21.5" and Mountain Lion (from imac 2007, snow leopard). I do professional photography.
Everything was fine until i notice that in some photos, my magenta-redishh colors were way to saturated. I DO food photography, speccially salmon and this particular salmon hue is very very saturated now.
Also i notice an increased "GAMMA" compared to my previous monitor, but i was expecting that on new imacs. Any way, this gamma enhancement increases overall contrast too making everything worst.
Tried to change the monitor profile (i´m using thedefault by now) and nothing changes. Is very annoying not having fine control over the iMac screen. The visual callibration method is very unreliable. I did not touch the "universal acces" contrast either, that is not the issue.
I´ll try to load in safe mode, maybe is there a nvidia CUDA driver error?
Please i need help .i´m afraid is a hardware issue.
thanks.

I downloaded the whacked rgb image and it looks ok for me. on every app. a little oversaturated overall
only color-managed apps will display whackedRGB correctly -- it will look blue on unmanaged apps
if it is still showing a little oversaturated in Preview, Photoshop, Safari -- then your monitor profile doesn't quite match your monitor
you might try using a fresh sRGB profile as your monitor profile (if that improves the WhackedRGB color) until you get the calibration figured out
untagged and adobe rgb look more saturated on orange-magenta hue.
untagged RGB on unmanaged apps generally gets sent straight to the monitor with no change
you can test this in Photoshop by View> Proof Setup: Monitor RGB
untagged RGB on color-managed apps (Safari, Preview) generally gets sent straight to the monitor with no change
untagged RGB on Photoshop (you ignore the embedded profile or don't color manage) and Firefox (with Full Color Management Value 1 enabled), for all practical purposes, ASSIGNS the working default profile and CONVERTS to monitor RGB

IMac screen suddenly recognizes VGA display that isn't there? Big problems

Hello:
My dad was using his iMac G5 when the display went to a blue screen (detected an external display) and formatted to take up a small amount (10-12 inches) of the 17" screen. As I was writing this, the detect display blue screen again flashed and returned to normal.
Under display prefs, it listed a VGA display. However, there isn't even an adapter in the adapter port. Does anyone know what is going on here? I live several hundred miles away and it just so happens that I was here for the weekend. I would like to resolve this asap.
No AppleCare.
Thanks,
Tyler

Sorry to chime in without a solution, only another query along the same lines. I have a co-worker who's imac (24" 2.33 intel) sometimes starts up thinking that there's a second smaller display connected. The first time this happened, the dock didn't show up (she had it set along the right-hand side, it was apparently on the "other" screen), she restarted and it would then show up. A couple of days ago I was doing some updates, restarted, and the dock disappeared again. I noticed that the mouse fully disappeared off the right side. Having seen this behavior when two displays were connected in the past, I went to the display preferences panel and it registered two screens, the main one and a much smaller one on the right side. I clicked the "detect displays" button, which reset it correctly back to a single monitor, thinking issue solved. But this morning the same issue occurred. Easy to fix, granted, but I was hoping there might be a more permanent solution? I don't think there's a single displays preferences file that might be replaced, and I'd just as soon not mess around with pitching the full system preferences file unless that'd be the only solution...
Thanksmuch in advance, and have a good one!

URGENT HELP NEEDED: iMac screen suddenly going half dark?!

Hi..
So earlier tonight I was using my iMac perfectly, then had to stop since I was going out with friends for dinner and to see a performance and when I came back, shook my mouse awake my screen came back on from it's sleep mode and was fine and then the top half dimmed.
I tried messing with the lighting because I thought maybe my roommate's cat may have stepped on it, but it was at 100%. I rebooted, turned it off for 5 minutes then turned it on again and it comes on fully lit for a split second then dims at the top again. It's not black, but you can see that the screen has dimmed a lot. I'm attaching a picture, hopefully you can tell what I mean. It's a kind of crappy phone pic but that's all I have right now.
I bought this iMac in May 2007, so I doubt I have any warranty left and I can't remember or find paperwork to see if I bought apple care protection.
Does anyone know what this could be? I've read on another forum that it might be a back light going out. Any idea how much that would cost me?
Thanks!
Message was edited by: CallyKhS

Well, some questions ?
I'm just another user and no expert, but:
*Might not want to shut it down until you have backed up your data, First!*
1.) Does everything else run good? --if "beach balling" badly, call an expert and I wouldn't shut it down or sleep it.
2.) Is there a hardware test you could run? --each version of OSX generally has something like disk utilities you can run. Try apple's downloads page for useful 3rd party utilities, assuming you can run them o.k. and everything "seems" fine except for screen.
3.) Do you have it plugged into a surge protector? --sometimes they get used up. You could (after verifying hardware and preferably backing up data) try it on another wall socket in another room, to check electrical viability. You might have a bad or dangerous wall outlet. If the wall gets really hot above the outlet, have it checked out immediately. Houses burn down every day from bad outlets and old aluminum electrical wire. (lol, I'm not saying anything bad about your house.....just trying to cover the basics).

Imac screen suddenly becomes HUGE while in Safari??? Help???

I recently purchased a 27 inch IMac. I am running Safari 6.0.5 and OS 10.8.4. Everything is going fine and then suddenly the screen goes HUGE and I have to shut down Safari and relaunch it frequently losing whatever i was working on. I tried double clicking with on finger, double clicking with 2 fingers, as well as cursing at the computer without any success. The smart-zoom on my mouse says that if you double click with one finger this will go away but it is lying!!
This has become a pain in the A**. Any suggestions or ideas. i am sure I am not the only one with this problem!!
Thanks
David

I understand you can turn smart zoom off if it cause too many problems for you,go to System Preferences/Mouse and uncheck smart zoom

06 intel 20" imac screen gets darker at bottom

just started uup the computer this morning and found that the screen fades to a darker tone down the screen.
http://farm2.static.flickr.com/1031/132232444748b3e99079b.jpg
anyone else had this or can anyone offer solutions, iv run out of warranty and support.

Both. My 20" iMac at work has the same problem. It is common on the ALU 20" iMacs and yes I would say it's defective. Apple may not agree though.
George
<Edited by Moderator>

Primary screen goes dark when external display is added

Hi,
Earlier, when I was on Mac Lion, I always used to face problems whenever an external Monitor was added to the Mac through the firewire to VGA converter port.
Hoping that Mavericks update would give me a respite from the issue, I upgraded my Mac Pro and to my utter shock, the issue has got magnified in mavericks. The primary screen goes completely dark whenever I add the external monitor.
Any idea how to overcome this issue ?
Thanks in advance !

I meant the mini Display Port intead i wrote firewire port.. Hope it doesn't confuse anyone !

(SOLVED) Lock screen suddenly doesn't work as expected

It doesn't matter which lock screen (PIN, swipe, etc.) I choose, after the first unlock (after a reboot or change of lock screen), the phone no longer locks. Using the power button to lock doesn't work and I have the phone set to lock right away on sleep. It was working fine a few hours ago and there wasn't anything new I did to the phone.
Any ideas?
Solved!
Go to Solution.

Hello, I feel pretty dumb. I must've hit the "Disable lock screen" option in the BatteryBot Pro app by accident...I forgot it even had that option.
If anyone's curious how I solved this, I inspected system messages using OS Monitor while reproducing the problem (ie, flipping through lock screen options and turning off/on the screen) and kept seeing the app's name coming up as well as a few others. I'm not sure why it started disabling the lock screen today though; I'm pretty sure I didn't touch the app in the last couple days.
Anyway, sorry for any inconvenience.

My iMac screen suddenly turn black and white when I'm in fullscreen mode. What could be the cause of this problem?

Hi, once in a while the screen on my 5K imac turns black and white when I'm on youtube watching videos in fullscreen mode. It also exits the fullscreen mode automatically from one second to the next and a warning pops up saying how I can exit the fullscreen mode. Does anyone have an idea why this happens and if this is a software or hardware problem?

I'm using a Dell laptop with Windows 7. I've set the resolution to 1024x768, though the maximum resolution on this can go as high as 1366x768. So this is a problem that no one has been able to figure out? I've ran lots of other Flash-based applications that went fullscreen with no problem, so I'm wondering what other methods there are to try, if possible.

IMac screen goes dark

When waking computer, screen flashes then goes black again. But it's on. Computer goes to sleep or screen goes black - it looks asleep - out of no where, even while typing, the screen starts dimming as if I wasn't using it.
Does this sound familiar?
I have the latest Lion - thought about Mountain Lion but haven't been able to see the screen long enough to install.
Help....should I take it in to a mac shop?

Have you blown the dust out lately?
Let it cool for an hour or 2 & see if you can get these...
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/
Forget trying o Upgrade for now... or maybe forever.

My camera disappeared from my iPhone screen suddenly. there one minute, gone the next. pictures are still there, can seem them in memory. icon lost. any thoughts? Dan

My camera icon has disappeared from my iPhone. pictures and videos seem to be in memory, but the icon is gone and I cannot work out how to get it back! turned phone off, did not bring it back. was working earlier today. Thoughts? Dan

Go to the Search screen an enter "camera". If the app appears then you have simply misplaced the icon. Look at all of your folders and pages of your Home screen, or, as a last resort, go to Settings/General/Reset - Reset home screen layout.
If the app does not appear that function has been blocked. Go to Settings/General/Restrictions. If it is enabled you will have to enter your Restrictions passcode.
If it is not blocked in Restrictions and you have a Corporate MS Exchange email account on your phone your IT department may have blocked the camera. If this is the case there is nothing you can do about it other than deleting the Exchange account and the associated security profile (in Settings).

Imac 2012. screen goes dark in the middle of working.

while working on the imac the screen goes dark. to turn it back on hittingseveral keys and short tap on in/off button. after trying vsarious things it turns abck on and then happens againg. like its going into sleep mode intentionally? any ideas?

iMac (27-inch): AMD Radeon 6970M Video Card Replacement Program

My iMac screen suddenly dark. Cursor works. Display gone? Processor ok?

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