Small white square appearing on screen

Most likely a dead pixel (the screen is populated by thousands of them which, as a whole, result in the pictures/graphics you see). Here is some general info:

http://support.apple.com/en-us/HT5266

And here is an article addressing dead pixels:

About LCD display pixel anomalies for Apple products released in 2010 and later - Apple Support

all makes perfect sense... except I cannot for the life of me find any reference in Apple docs to the tick mark box as being an on screen indicator of display mode - you may have indeed found an anomaly though - look at the similarity to the tick boxes in this image from > Frequently asked questions about using a Retina display - Apple Support

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I'm noticing functional or visual issues with an application. How can I make it work better?
Try opening the application using Low Resolution mode:

1. Quit the application if it is currently open.
2. etc........

This, I'm afraid, will remain one of Life's Great Mysteries... when troubleshooting, one thing at a time is imperative to detect that issue that is the fix.

Say "La Vee"

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Howdy Franca

Tell us a Story

- with a beginning, a middle and end. We need to understand everything that you know and have experienced.

If this issue is new, tell us what immediately preceded its onset - add software, upgrade or update? New equipment? ANYTHING AT ALL...

Quoted from  Apple's "How to write a good question"

To help other members answer your question, give as many details as you can.

• Include your product name and specs such as processor speed, memory, and storage capacity. Please do not include your Serial Number, IMEI, MEID, or other personal information.
• Provide the version numbers of your operating system and relevant applications, for example "iOS 6.0.3" or "iPhoto 9.1.2".
• Describe the problem, and include any details about what seems to cause it.
• List any troubleshooting steps you've already tried, or temporary fixes you've discovered.

For a detailed "coaching", please see the User Tip > "Help us to help you on these forums"<https://discussions.apple.com/docs/DOC-5431>

"Keep It Short and Simple" - Take your time... but be thorough - ÇÇÇ

Also, take the Dull Display screenshot with ONLY the Finder visible

You should write in your own language (Portuguese?) - and let us translate

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Conte-nos uma história

- Com um começo, um meio e fim. Precisamos entender tudo o que você sabe e experimentou.

Se este problema é novo, diga-nos o precedeu imediatamente o seu início - adicionar software, atualizar ou atualizar? Novos equipamentos? NADA MESMO...

Citado de  Apple "Como escrever uma boa pergunta"

Para ajudar a outros membros responder a sua pergunta, dar o máximo de detalhes possível.

• Inclua o nome do produto e as especificações, como a velocidade do processador, memória e capacidade de armazenamento. Por favor, não incluir o seu número de série, IMEI, MEID, ou outras informações pessoais.
• Forneça os números de versão de seu sistema operacional e aplicações relevantes, por exemplo "iOS 6.0.3" ou "9.1.2 do iPhoto".
• Descreva o problema, e incluem quaisquer detalhes sobre o que parece causar-lo.
• Liste todas as etapas de solução de problemas que você já tentou, ou correções temporárias que você descobriu.

Para um "treinamento" detalhadas, por favor consulte a Dica do usuário> "Ajude-nos a ajudá-lo nesses fóruns" <https://discussions.apple.com/docs/DOC-5431>

"Mantenha-o curto e simples" - Leve o seu tempo ... mas ser aprofundada - CCC

Além disso, tomar a captura de tela de exibição Dull com apenas o visível do Finder

Você deve escrever no seu próprio idioma (Português?) - E deixe-nos a traduzir

I am on a retina MBP connected to a 27in thunderbolt display. Safari is open on the thunderbolt, and that's where I see it. It's gone right now but if it comes back on , I'll try to move safari to my MBP screen and see if the square follows. It looks exactly the same, white square with drop shadow, about 8 pixels.

I also have not had any chat screen takeovers. I'm positive it is Safari, and it seems to be malware, but I'm a fairly competent user and generally wouldn't visit a site with that may do such a thing to my beloved computer 😉 Would be a pretty huge issue if there is malware out there overlaying a discreet window on OSX. I'm just adding in my voice so others that may experience it might come across the topic

The little white boxes are menus. There is something wrong with the programming of our Safari browser on our IPhones. It appeared since last software upgrade. It is a problem with JavaScript or Flash. Apple keeps upgrading their software so that it works properly for convicts employed by the CIA with our credentials, but it doesn’t work for us.

Carol

Take a screenshot of the entire screen [ ⌘ Command + ⇧ Shift > Press ' 3 ' > release all three ] and post here using the 'Camera Tool'

Your Product Info (Default or Only) displays automatically at the end of your Question post

it is incongruous in that a MBPro does not run iOS - you can edit and fix it on you profile page - you'll figure it out

meanwhile, give us your MBPro specifications (year, processor, RAM, HD, peripherals) and your iPhoto version.

While we mull that over, you could open the misbehaving file in Preview.App to see if the 'white square' is actually part of the image (doubtful)

This sounds like a problem with the Display itself, but the screenshot you post will tell US as the screenshot is a picture of the display IN ROUTE TO the display - not the display itself. Since you have an iDevice, take a picture of the Retina Display showing the "white square" and post it as well.

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OK. I see it IN the image...

⬇ click/tap to enlarge any images ⬇

VERY curious. This LOOKS like a "Checkbox" from a form or dialog of some sort. Never seen anything like it - but I don't LIKE what it may mean.

If this is present no matter what you are displaying in any APP, that means that this is some App putting it there in a floating layer over everything - the small nature may mean a very small window as well - nefarious would be my guess.

Just for documentation sake, you said at first notice you were working in iPhoto on an image? Would you do another screenshot of that or similar image to show this "BOX" in iPhoto - thus proving it is not a browser issue?

Does this MOVE at all when scrolling? Jump around?

Meantime, I will inspect the original screenshot you posted in PhotoShop to get exact coordinates and color info.

Mysterious, to say the least. I will ask our good friend thomas_r. - the MalWare guru to have a look at this thread for his two cents worth.

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Screenshot details

2560 x 1800 – screenshot display image
12 x 12 = box size
1219 x 612 xy coordinates of top/left of box
240, 240, 240 = RGB of box
250, 250, 250 = RGB of background
223, 223, 223 = box Outside BORDER
1 pixel Global light shadow

support3008 wrote:

Dear CCC

My photos seem to large to copy to you BUT whilst trying this I have discovered the square is on the computer and on most programmes i.e. pages, iTunes, messages etc so it is ON the computer itself! Not just on my photos.

The square stays fixed it does not move and is about just under 2/3rds up the computer screen and nearly in the middle of the screen.

I did try to minimise the size of a picture by exporting it to finder but when I opened it there was no mysterious square as you can see below.

Thank you for your help in this, I appreciate this. I have been having some 'mail' password problems recently and was in contact with Apple support and they 'took over' my computer to solve the problem. This 'white square' issue seems to have occurred since then - 2 nights ago - but that may just be a coincidence??

You SEE the BOX in the screenshot because it is ON the screen when the snapshot takes place - it is an image of the screen buffer - all DATA.

The fishing man is a FILE - saved not by what you see, but by what it contains in RGB pixel data.

The screen share is likely the culprit. Restart your computer to see if it persists. If so, Call Apple back and give them the trouble ticket number and explain that a remnant of the session remains and is annoying.

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Your welcome (I guess?)

So do you think mere Restart did the trick? Or did you restart and then do something from the bottom of the page (this actually got put there because the esteemed babowa post the link)

reece

you should re-read the thread in total... there were two possible causes, but the OP did two things at once, so we will likely not know which or if both were the fix.

• leftover relic from Apple Chat Screen takover
• Retina display setting

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Look right above your previous post above

If you really feel it is malware -

The Safe Mac

The Safe Mac » Adware Removal Guide

AdwareMedic

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