Why does my iMac screen turn mauve?

Occasionally my iMac screen turns a mauve colour. I have also noted that since updating to 10.10 the screen does not wake up after the system has been put to sleep. I know the system wakes up because I can hear my LaCie drive start up. What could be causing these things to occur?

Hi, Papa_Tech.
Thank you for visiting Apple Support Communities.
I understand that your Mac fails to wake from sleep. Here is a troubleshooting article that I would recommend going through when experiencing this issue.
OS X: When your Mac doesn't sleep or wake
http://support.apple.com/kb/TS5357
Cheers,
Jason H.

Similar Messages

Why does my Imac screen slide and I lose my screen? It goes back to my desktop. Then sometimes my screen goes to full screen and I don't know how to get out of it.

Why does my Imac screen slide and I lose my screen ~ It goes back to my desktop.
Then sometimes my screen goes to full screen without me doing any commands, and I don't know how to get out of it without going to force quit and starting all over.

Hi,
When it goes full screen try moving the mouse up to top right of scren & see if there a double diagonal Arrow to click on.
On the other see if it's the silly implentation of Spaces/Mission Control/Expose in ML...
https://discussions.apple.com/thread/4298411?start=0&tstart=0

Why does my iMac screen keep switching off / going black?

After about one half hour of use my new iMac screen switches off / goes black.
The screen can be switched on by pressing the power button on the back on the machine a few times. It remains lit for about 20 seconds. This can comntinue for about half an hour when it stops switching off or when I give up.
I have conrtacted Apple but they have been unable to solve the problem.
The machine is just not fit for purpose as I cannot use it for work.
It appears from the internet that this is a recurring imac problem.
Please, what am I to do?

Call AppleCare (number is in the manual) and then request to speak to Customer Service. Be patient, organized and articulate and they will transfer you. When you get to speakt to someone then explain your problem and ask for their help. You should have all your receipts, invoices, trouble ticket numbers etc available for reference.
You can also take to an Apple Store in Spain, while this may not be convenient at least then an Apple person can see the machine and work on it.

Why does my iMac screen continually wake up when streaming movies?

Whenever I stream a movie from my iMac to Apple TV, my iMac attempts to wake up every few minutes. It is in the same room as my tv, so it is distracting especially at night when the login box constantly pops up. Until a few months back I never had this issue.

The computer needs to wakeup in order to play the movie and interact witht the files in your iTunes library.. it's either this or the appleTV will get an error.. and you'd need to walk over to the computer and wake it up manually.. i have a mac mini and i just turn my screen off.. not sure if there is a way to just disable the screen itself on a iMac but that is what you want to do.. but the iMac really does need to wake up to interact with the appleTV.. as i said.. you can have this happen automactically or the other option is to manually walk over the the computer and wake it up everytime you appleTV gets an error because you computer is asleep..

Why does my iMac screen flicker only when using Safari? It doesn't happen with Firefox.

Yesterday, I had an issue with OS X, causing my screen to go black upon waking up my pc. Come to find out through the Apple Forum, that when the OS X was originally installed, it was not a complete install. Once I received the fix solution, completing the OS X install, (10.9.3) everything was back to normal, so it seemed.
Now, when using Safari, the whole page flickers and so forth, including the address bar. I never had problems with the screen prior to this. Also, it doe not occur when using Firefox.
Is there a fix for this? or an adjustment that can be made. This never happened prior to the OS X install, which was about 2 months ago.

Troubleshoot Safari extensions ..
From the Safari menu bar click Safari > Preferences then select the Extensions tab. Turn that OFF, quit and relaunch Safari to test.
If that helped, turn one extension on then quit and relaunch Safari to test until you find the incompatible extension then click uninstall.

Why does my iMac screen seem to be flickering everytime I launch an app since Mavericks update?

Am I the only one who is having this flickering thing (for 1 sec) when an app is launched? This only started right after the Mavericks update, I don't know if it's iMac related or if everyone who updated to Mavericks got this.

Do you have any external drives attached that may have an older version of iTunes on them?
I wonder whether reinstalling (one more time) using the standalone installer rather than the App Store may help get round the problem:
http://support.apple.com/kb/DL1614

Why does my imac get a black screen when switching on

why does my imac get a black screen when turning on, and logging in is very slow.

I would first reset the SMC:
Shut down and unplug the Mac.
Keep the Mac unplugged for at least fifteen seconds.
Plug the Mac back in and do not turn it back on for at least five seconds.
Press the power button to turn the Mac back on.
Then I would reset the PRAM by rebooting the iMac while simultaneously holding the Command-Option-P-R keys until the machine restarts a second time.
Let us know if these procedures don't solve the problems.
Hope this helps

Why won't my screen turn when the phone does?

why won't my screen turn when the phone does?

Not all apps support screen rotation. The Home screens do not rotate. But also check to make sure you have not locked screen rotation. Swipe up from the bottom of the screen to reveal the Control Center and check that rotation lock is not on.

Why does my iMac display go off when I am starting up or waking up my machine from sleep..

Why does my iMac display go off when I am starting up or waking up my machine from sleep..?
When my iMac goes to sleep I then later try to click the magic track pad or keyboard and it will usually then show the initial password entry login screen and then go off. The machine is still on but the display is black and will sometimes flash up the screen again if I press the magic track pad or keyboard but will then black out again..

Well, there are many different reasons why it does this. It might shut off due to power voltage problems, system overheats, or there is a System Problem. The reason it might be hard to boot up is because your power button might not work properly or your system hard drive is damaged.
<Email Edited by Host>

Why does my iMac appear many times in my network and labelled 1,2,3, etc

why does my iMac appear many times in my network and labelled 1,2,3, etc

Ok, I solved it.
I followed this steps:
1- Turn Off Wi-Fi from the Wireless menu item
2- From the OS X Finder, hit Command+Shift+G and enter the following path:
/Library/Preferences/SystemConfiguration/
3- Within this folder locate and select the following files:
com.apple.airport.preferences.plist
 com.apple.network.identification.plist
com.apple.wifi.message-tracer.plist 
NetworkInterfaces.plist 
preferences.plist
4- Move all of these files into a folder on your Desktop called ‘wifi backups’ or something similar – we’re backing these up just in case you break something but if you regularly backup your Mac you can just delete the files instead since you could restore from Time Machine if needed.
5- Reboot the Mac
6- Turn ON WI-Fi from the wireless network menu again

Why does my iMac only have 1 GB of memory? I hardly have anything on here. I cannot download software update in order to get Turbo Tax to work.

Why does my iMac only have 1 GB of memory?

Put in more RAM. Visit OWC, DataMem, or Crucial.com to purchase memory for your model. You computer would have more memory had you put more in a long time ago.

Why does the payment screen for the creative cloud change from english to portuguese?

Why does the payment screen for the creative cloud change from english to portuguese?
I'm trying to sign up for the photography creative cloud with lightroom 5 and photoshop. When I click on the "buy" button is takes me to the payment page, but my country changes from the U.S. to Argentina and the language changes also.
I've tried contacting Adobe, but they're ways of contacting them are a pain in the ***. The chat doesn't work and I'm on hold forever when I call.

Make sure that EVERY DETAIL is the same in every place you enter your information
-right down to how you spell and punctuate the parts of your name and address
Change/Verify Account https://forums.adobe.com/thread/1465499 may help
-Credit card https://helpx.adobe.com/utilities/credit-card.html
-email address https://forums.adobe.com/thread/1446019
-http://helpx.adobe.com/x-productkb/global/didn-t-receive-expected-email.html
-http://helpx.adobe.com/x-productkb/policy-pricing/change-country-associated-with-adobe-id. html

HT1529 why my MacBook Air screen turns grey & hang

why my McaBook Air screen turns grey &hang

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Step 1
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time after you had the problem. Select the messages logged before the boot, while the system was unresponsive or was failing to shut down. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V). Please include the BOOT_TIME message at the end of the log extract.
If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.
Step 2
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post any other kind of report — it will be very long and not helpful.

Why does my login screen when scrolling mouse over appear pixalated (has small squares wherver the mouse scrolls until the entire page has been scratched like a lotto ticket:) ?

Why does my login screen when scrolling mouse over appear pixalated (has small squares wherver the mouse scrolls until the entire page has been scratched like a lotto ticket:) ?

OS X Lion: Login window partially appears, cursor movement redraws screen

Why does my lock screen glow green?

Why does my lock screen glow green? It does it quite often, no affects on the phone.

Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.

Why does my iMac screen turn mauve?

Similar Messages

Maybe you are looking for