yogadude

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Q: I have a small white square on my screen - it doesn't drag open or move, 21" iMac (mid 2010)

Just today I noticed a small pale white square on my screen. It's fixed in position, doesn't drag wider or open up anything.

iMac spec is 21" mid 2010 updated Xmas 2014 to OS X - Yosemite 10.10.1, 3.06 Ghz Intel Core i3

iMac, OS X Yosemite (10.10.1)

Posted on Jan 6, 2015 3:34 AM

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Q: I have a small white square on my screen - it doesn't drag open or move, 21" iMac (mid 2010)

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by Jason L,Helpful

Jason L Jan 7, 2015 8:05 AM in response to yogadude
Community Specialists

Jan 7, 2015 8:05 AM in response to yogadude

Howdy yogadude,
Welcome to Apple Support Communities.

It sounds like the small white square on your iMac's display may be a pixel anomaly, take a look at the article linked below for more information and possible solutions.
About LCD display pixel anomalies for Apple products released in 2010 and later - Apple Support

Cheers,
-Jason
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by yogadude,

yogadude Jan 7, 2015 9:22 AM in response to Jason L
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Jan 7, 2015 9:22 AM in response to Jason L

Thanks Jason - I tired something even simpler and did a full shut down and reboot. Seems to have fixed the problem. Bit weird though.
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by Jason L,

Jason L Jan 7, 2015 11:25 AM in response to yogadude
Community Specialists

Jan 7, 2015 11:25 AM in response to yogadude

No problem. I’m glad to hear it’s sorted.
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by dpowersatx,

dpowersatx Feb 11, 2015 12:56 PM in response to yogadude
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Feb 11, 2015 12:56 PM in response to yogadude

I have the same thing. Comes and goes. It is an 8X8 pixel square that has a soft shadow. Cannot be moved or right clicked. Closing safari kills it but it returns.
NSA?
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by reececonrad,

reececonrad Feb 20, 2015 3:39 PM in response to yogadude
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Feb 20, 2015 3:39 PM in response to yogadude

8 pixel drop shadow square for me too. Caused by safari, exiting safari it goes away. Seem nefarious. Definitely not a pixel anomaly. It's a white square with a drop shadow on it.
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by reececonrad,

reececonrad Feb 20, 2015 3:41 PM in response to dpowersatx
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Feb 20, 2015 3:41 PM in response to dpowersatx

any other thoughts recently on this? I can get it to go away if I leave Safari but it has come back twice. Also, some people have mentioned screen sharing and I have used Screen Hero to share my screen but that doesn't make sense to me b/c it goes away when I exit safari. Screen Hero is it's own app, not running through Safari in any way that I could imagine.
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