IMac 27inch Resolution bug

I have iMac 27inch and when i restarted, shut down or put my computer to sleep, when i turned it back on, the resolution is on 1280 x 720 and i can't change it back. I have os x mavericks 10.9.4 Im now stuck at that low resolution, my mac is old only one week. Pls help me.
Great Regards!

The warranty entitles you to complimentary phone support for the first 90 days of ownership.
If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

Similar Messages

Secondary 4K display for iMac 27inch

Will my iMac 27inch (late2012) support a 4K display? - Philips BDM4065UC/00 UHD 4k monitor. i.e. Can i plug this monitor into the thunderbolt port and it run at full resolution. It is for Video Editing. Also, can i plug in another display to the other thunderbolt port and run two external displays?

Hello Saimurai,
Thanks for using Apple Support Communities.
If you want to use a 4K display with a Mac, the Mac needs to fit the requirements below. Since your iMac is a late 2012 model, it does not support a 4K external display.
You can use 4K displays and Ultra HD TVs with these Mac computers.
MacBook Pro (Retina, Late 2013 and later)
Mac Pro (Late 2013)
iMac (27-inch, Late 2013 and later)
Mac mini (Late 2014)
Using 4K displays and Ultra HD TVs with Mac computers - Apple Support
Have a great weekend,
Alex H.

New iMac 27inch screen flickering/tearing/shutoff

I have been experiencing some problems with the all new iMac 27inch display.
At non-fixed intervals i will get one of the following:
Screen distortion/flicker somewhere random in the screen (feels like it is more in the lower part) that looks like a horizontal bar of about 2-3inches just popping in and out of the screen.
Screen will go completely black for a second and then come back on. Sometimes 2-3 times in a row.
Somebody else already made some video-clips about these problems, I am experiencing exactly the same behaviour.
http://www.youtube.com/watch?v=SjOxlxVz5Os
http://gallery.me.com/larzy#100025
Just to not that in the course of writing this post my screen has flickered 13 times and has gone black 2 times.

I received my 27" iMac three days ago and ever since i got it out of the box and turned it on it has done the same as the video shows.
Last night i watched a 30 min programme on BBC iPlayer and the 2-3 inch white lines kept popping up every few seconds horizontally across the screen. The screen also went black momenterally on 6 occasions.
I cannot believe after three days that this problem is so bad. I spome with Apple this morning on the Apple Care line and they told me to:
1. Shut down and take out power cord for 20 secs then turn back on.
2. Shut Down and then hold down "D" when turning back on which performed a hardware test...
Both had no effect.
Luckilly i am still within the 14 days of recieving my iMac and they are sending out a replacement but i am worried that this machine will have the same problems...
Is anyone happy with theres and is anyone not experiencing this problem... There seems to be a big issue here???

I just buy a imac 27inch when after intalling everthing for windows 7 and all the drivers i need and goes to the restard part my imac just goes to a black screen with a blinking cursel and it just wont proceed anyone can help me with this?

i just buy a imac 27inch when after intalling everthing for windows 7 and all the drivers i need and goes to the restard part my imac just goes to a black screen with a blinking cursel and it just wont proceed anyone can help me with this?

Support articles for things like this would be here:
http://www.apple.com/support/bootcamp

Imac 27inch display with laptop

Hi there all,
I have a iMac 27inch and would like to know if it is possible to use it as a display when working with my windows work laptop?
Cheers
Straydingo

Welcome to the Apple Discussions!
Not unless your laptop has a mini-DisplayPort. Your new iMac can only be a display for another computer that has mini-DispayPort output.
You can set up the laptop to share its screen with the iMac over a local network which would allow you to operate/control the laptop, but that is not quite the same thing and has a few seconds of delay usually. From experience it is not something that you would want to do all of the time.
Dah•veed

IMac 27inch screen shutoff

hi my iMac 27inch screen shutoff automatically. Sometimes I can wake the screen up again but sometimes I can't. Sometimes the screen just turns back on after a few minutes. I sent it back to the place I bought it. They say the either the motherboard or the screen is broken. I have to pay something around 800 dollars to repair it. It almost half price of the computer. Is there any other solution to my problem?

Only if they are wrong about the screen or motherboard being broken.
How old is it? And you did not get apple care when you bought it?
Had you gone to system preferences>energy saver and adjust the time before the screen sleeps?
The "turns back on" kind of is a bad sign for you though... Sorry I am unable to help at ALL.

IMac 27inch screen flickering

The left bottom side of my 6 month iMac 27inch gets flickering and darker, and if I press on the screen, it gets the correct lightning. What should I do? Is there any way to repair this by software? Or do I have to call apple care? thanks

Flickering would be covered by the warranty. I would recommend buying AppleCare though, you can find it discounted by doing a little searching. For example on Amazon I see it for about $130.00

New iMac 27inch screen flickering/tearing/shutoff (continued)

This thread is a continuation of [New iMac 27inch screen flickering/tearing/shutoff|http://discussions.apple.com/thread.jspa?threadID=22 12682]. The thread was becoming too long and was causing some browsers to time out. The older thread has been locked.

citrus101 wrote:
Hi Brett L,
thank you for the coordination of this helpful thread. Are you Apple? If yes, please allow me to ask you three questions:
1) The Display Firmware stopped for over 90% the flicker issue, but what has this Firmware changed exactly?
2) Is Apple preparing a fix for the yellow tinge?
3) When will it be save to buy a new iMac?
Thank you for your efforts.
Hello Citrus.
Excellent questions.
I hope that Apple will authorize Brett L. to provide us with some clear, honest answers to them . . . although, as I pointed out before, it would seem by the latest messages that have been posted in this thread -- that is, the *original thread* -- that through their actions, Apple has already provided us with their answer -- and solution -- to the yellow tinge issue; and that is the replacement of the LCD panel.
As to what the most recent display firmware update did, I am doubtful that Apple will allow Brett to reveal that kind of information, but we can be hopeful.
As far as when it will be safe to purchase a new iMac, I seriously doubt that Apple will say anything which would suggest that it is not safe to purchase a new iMac now. What company is going to say "Don't buy our product now. It's not safe"?
For my part, I have now contacted Apple regarding the issues that I am having with my 27" iMac, and I will wait over the next few days to see how things play out. Based on the testimonies of others here, I don't expect Apple to disappoint. I have the confidence that they want to leave me a satisfied customer who will continue to purchase their products in the future.
Message was edited by: Warren Beasley

How much do I need to by an iMac 27inch

How much do I need to by an iMac 27inch ?

iMac - Buy iMac Desktop Computers - Apple Store (U.S.)

Which new Imac 27inch model is better?

I was looking to upgrade from a MacBook Pro to the new Imac 27inch. I was looking online and saw that the lower 27inch 2.9 ghz model runs the same or a little better than the 27inch 3.2ghz model. Does anyone know if this is true and does anyone have some suggestion on which model to get?

Both are Intel i5 CPUs so, the 3.2Ghz CPU should be faster.
If the 2.9Ghz i5 CPU model was tested with the Fusion drive, it may have been faster, but that would mean that the 3.2Ghz CPU model would be even faster with the Fusion Drive, too!
Purchase the best and fastest iMac you can afford.
Plus, with the 3.2 Ghz CPU model you get the faster 1GB VRAM GPU.

My iMac 27inch screen keeps going black but everything is still running in the background? please help

My iMac 27inch screen keeps going black but everything is still running in the background? please help. I have read that apple are recalling 27inch iMacs....

Hello @DesCherryBomb,
I understand that you are having issues with your HP 2310m monitor going blank and/or flickering. I am providing you with some steps you can try below:
Step 1. Unplug the power cord from the back of the monitor and the wall
Step 2. Hold the power button down for at least one minute
Step 3. Plug the power cord back into the monitor and then into the wall outlet (not a power bar or surge protector)
Step 4. Press the Menu button on the monitor
Step 5. Navigate to the Factory Reset option and select it
If the above steps did not resolve your issue you can try the monitor on a computer or other device to see if the issue persists. Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Mac Mini or iMac 27inch

Hello.
i am thinking, well going over getting a new computer for 3 months now and decided on Apple after 20-30 years with Windows PCs.
i have read a lot on Mac Mini's and its usage with photographic apps like Lightroom and Photoshop, with great positive facts.
My problem, well choice is a odd one. As i am using a very old notebook (was using work PC mostly), i will need all the hardware to be operational.
Choices 1. (£1,180.00) Ram Price added
Mac Mini i7 2012 model
16 GB extra Ram (will place myself)
Monitor - 1x 27inch 1080p or 2x24inch 1080p
Apple Mouse
Apple Keyboad
Choice 2. (£1,469.00) Refurb Mode) Ram Price added
iMac 27inch i5
16 GB extra Ram (will place myself)
My problem is what do i go for ?
- know the iMac comes with all i will need and a better graphic card, better screen at 1440.
- I will gain an extra screen and easy to upgrade the HD to SSD in the future, also its cheaper.
As the Apple conference is upon us your feed back will not go s miss.
Thank you
RajArt.

lllaass wrote:
I would wait an hour or so since at 10 PM pacific time today Apple is having an event and are expected to announce new/updated Mac computers as well as iPads.
http://www.apple.com/live/
I got a page already there, musics good, especially right now.

I unwittingly altered my 27" iMac's resolution.Now it's too big or small.

When I try the different display resolution choices available to me I either can't view the whole desktop (without having to scroll), or, I can't fill the whole monitor. How can I get it back to "normal?"

Well, it's me, "Craigzilla," replying to my own post. You see, I'm new here, and still rather ignorant of just how things work. For example, I WANTED to "award" Niel the full 10 points, but somehow it appears I mistakenly awarded only five? And I surely don't know how to change it. Oh well, maybe this reply will suffice. Bottom line? Niel answered my question about iMac screen resolution impeccably. He did so with lightning-like speed, complete conciseness, and absolute accuracy. Merci beaucoup!

Imac 27inch is a better option for editing?

Hi! i am having intel based Imac 17 inch computer .I want to go for 27inch . Is that good for editing?
The imac 27inch has only one firewire 800 and i want to connect to my external hardrive and to my external monitor. So i need two firewire ports atleast. what should i do? help me please.

Monitors do not connect to Macs through Firewire ports. You use the Mini DisplayPort for that, along with a suitable adaptor like the Mini DisplayPort to DVI Adapter or Mini DisplayPort to VGA Adapter.
You can also daisy chain several Firewire devices on a single Firewire port, for instance to use several Firewire HD's or a HD & some other Firewire-connected device.

IMac 27inch desktop problem

I have recently bought the latest iMac (27inch) but it won't let me put folders onto the desktop and I have no hard-drive icon on the desktop.

Hi,
Re the Hard Drive Icon...
Goto Finder Preferences... Select Sidebar... and Check the Box for Hard Disks...
Cheers,

IMac 27inch Resolution bug

Similar Messages

Maybe you are looking for