What causes my mac computer screen to flash scramble words and black line across the screen when on the internet

my computer when on the internet cause black lines to show up accross the cuputer screen and word scrambled. How can I stop this from happening

Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own".
Sleep function OS X Mavericks:
   http://support.apple.com/kb/HT5869

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How do I get rid of this black line across the top of my screen...

There is this black line that stretches about midway across the entire top of my screen... I read something about reseting my PRAM and I did that but it didn't remove the line... any insight on what is wrong with it and what needs to be done??
Thank you!

Is your Mac still under warranty? It sounds like a hardware failure.

Brand New iPad 3 has a jiggly screen and black boxes across the screen in different apps

My mother purchased a brand new iPad 3 about 1 week ago. The screen has begun to shake while she is in the apps. (This is not the shaking that icons do on when you hold an app down so you can rearrange.) When this happens the screen will go blank when her hand is near it and reappear when she moves it away. Also, in some apps, I have experienced this in the App Store and Facebook, black boxes cover the screen so that you cannot see what is behind them.
We have tried shutting it down completely, but that doesn't seem to be a fix.
I have been searching for others with this problem and haven't found any. Help would be appreciated. Given the sporadic nature (but often enough to be a bother), I'm hesitant to go to the Genius Bar for fear it wouldn't do it then.

I've had the same problem with Big Black squares covering the screen. And a few times the screen has split vertical in the middle and pushed everything in the on half a little down, making it very difficult to read text as the lines was cut in half.
I first experienced it in Mail, and then in Safari. I noticed that it is only covering content, not the App bar and When I scrolled down, the boxes were staying On the spot On the page. I figure it must be a software problem as it moves alting with the rest of the content, so I tried uenig Chrome instead, but yesterday the same ting happened.
I have tryed to take a screen dump, but it gets completely black
Its not warm When the problem occours.
Anyone with a solution?

Restore from iphone4 itunes backup stops after upgrade to ios6. does it have to do with my computer settings as it starts hanging and cannot connect to the internet anymore either till I restart.

I have the latest version of iTunes and the iOS6 installed on my iPhone4. The restore from my iTunes backup stops at the end of the recovery process though. Do I need to change anything in my computer settings to let it totally finish?

Texas1412 wrote:
I recently upgraded to 10.5.8 from 10.3.9. I have a Powerbook G4. All was working well with no problems until I upgraded. Initially, everything was still working fine then after about a week it stopped connecting to the internet both wirelessly and via ethernet. It was down for about 2 weeks when I started to 'play' with the settings. I don't know what I did, but it worked again. The computer stopped working again about a month ago and I just am now getting to it. I don't know what else to do and why it stopped.
You might try the three suggestions in the second message of this thread:
http://discussions.apple.com/message.jspa?messageID=10445592

Thin black line across screen

My 5th generation Ipod classic has, in the last year, developed a think black line across the center of the screen that is always there. Is this a "dead pixel" area that has developed? Is there any way to repair this that isn't costly?

This is a fairly common problem and I believe the only solution is to replace the screen or simply live with it. My daughter's old ipod does the same thing. You will notice that the lines only show up when the backlight it on, right?
Patrick

Ipod Touch, black line on the screen

Hello.
I recently went on holiday to Corfu. I took my ipod with me, and while there, noticed one day that it had developed a black line across the screen. Even when turned off, you can still see it.
It doesn't effect the touch screen from working, it just doesn't look so good.
Is there a way to fix this?
Thanks

You may want to remove the Invisible Shield from the unit before taking it to the Apple Store. If they end up giving you a new touch, they likely won't replace/reimburse you for the Shield. If you have the Shield removed, at least you stand a chance in getting it replaced by sending it back to Zagg (you need to send your original Shield back to them to get a replacement). You can just send it back as being damaged and should get a brand new replacement which you can then use on the new touch. You cannot re-apply an already used Shield.
Tip: if you get a new touch and are waiting for a replacement Shield, keep the original protective plastic film on the touch until you get the Shield. I'm sure you know that the back of the touch will get scratched if you even look at it the wrong way.

My Mac computer screen randomly went black I hit a button. Now i been trying to turn it back on and it won't cut back. However the computer is still able to charge

My Mac computer screen randomly went black I hit a button. Now i been trying to turn it back on and it won't cut back. However the computer is still able to charge. What can I do?

Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own".
Sleep function OS X Mavericks:
   http://support.apple.com/kb/HT5869

I have a an iMac 11,2 is there anyway I can stream what's on my computer screen to my HD TV? I have apple TV2 also.

I have a an iMac 11,2 is there anyway I can stream what's on my computer screen to my HD TV? I have apple TV2 also.

You're talking about Air Play Mirroring About AirPlay Mirroring in OS X
Your 2010 iMac doesn't meet the requirements For AirPlay mirroring but you can take a look at AirParrot http://www.airsquirrels.com/airparrot/

What would cause a slim horizontal line across the screen of my iMac?

There is a slim line across the Center if the screen. It is horizontal. It does not appear every time I boot up, but it is causing concern.

Welcome to Apple Support Communities
It would mean that your display or GPU are starting to fail, most likely the GPU, as the line is not permanent. Does the line move during the time your iMac is turned on or change if you start up in safe mode (holding the Shift key while your Mac is starting)?
A good test you can do is to make a screenshot of the screen when your iMac is showing the line. To make the screenshot, press Command, Shift and 3 keys, and the screenshot will appear in the desktop. Double-click it and see if the line appears. If it appears, it's the GPU. If not, it's the display

How do I get my TV to display what's on my computer screen (Not I-tunes)?

How do I get my TV to display what's on my computer screen (Not I-tunes)?

You have the display set in Extended Desktop mode. In System Preferences>Display on the MacBook screen there should be an Arrangement tab when you have the MacBook hooked up to the TV and both screens working. When you click the Arrangement tab do you see two monitors side by side? One of them will have a Menu Bar at the top. Just click on the Menu Bar and drag it to the second monitor. That will make the second monitor your main screen.
You can now use your MacBook in Clamshell Mode with a wired or Bluetooth keyboard and mouse. http://support.apple.com/kb/HT3131 When you disconnect from the TV your Menu Bar will automatically change back to the MacBook.
Or if you want to work on the MacBook screen while showing it on a TV you can check the Mirror Display box on the lower left hand side of the Arrangement tab under the two monitors box.

Has anyone else has seen this problem with their iPod touch 5th Generation with iOS 7.0.4. My screen started making flashing white lines across the screen, then went dim, then pixeled with purples

The ipod will show flashing white lines across the screen, going down, it then does somthing where the screen will dim down but its not like when the backlight goes on and its about to lock. It dims the background of your ipod and the icons and letters kind of all look defined. Then the ipod gets all pixelized and it has big boxes on pixels and its all differnt colors like purples and greens, red, etc. then it turns right off and restarts itself less than 5 seconds later. These things happen really fast but when it does it's really weird. It first happened 3 times in a row, Its still continuing to happen but i can manually turn off my ipod by holding the lock button down and not even 30 seconds later it's like its possessed and it turns on by itself. I talked to somone on appel and they told me to back it up and restore it. I restored it and as soon as the process ended and tuirned on like a brand new ipod and like clockwork the glitch happened instantly. It did it a couple of times throughout the night and i kept having to watch it so i can keep turning it off manually because it continues to turn on by itself. I talked to 3 different people on Apple Support and they couldnt even find an answer for me. It's so weird.

Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try another cable
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar
Also,
If you restored to factory settings/new iPod via iTunes (Not via Settings>General>Reset>Erase all Content and Setting) and still have the problem that indicates a hardware problem.
Make an appointment at the Genius Bar of an Apple store..
Apple Retail Store - Genius Bar

I plugged my ipod into my computer to load up new tunes and it froaze on the time I dad connected it with the message 'do not disconnect' on the screen.Despite disconnecting and reconnecting it and ensuring it was charged up it will not operate. The 'lock

I plugged my ipod into my computer to load up new tunes and it froaze on the time I dad connected it with the message 'do not disconnect' on the screen. Despite disconnecting and reconnecting it and ensuring it was charged up it will not operate. The 'lock' symbol is showing at the top of the screen even when I have moved the lock switch. I have been using my ipod for several years with no similar fault. What is the problem/solution?

I would first try resetting the iPod:
Reset iPod touch: Press and hold the On/Off Sleep/Wake button and the Home
button at the same time for at least ten seconds, until the Apple logo appears.
Next would be to restore the iPod from backup

My wireless internet running slow on my mac computer! But is seem to be working ok on the other laptops! Can u help?

My wireless internet running slow on my mac computer! But is seem to be working ok on the other laptops! Can u help?

Hello,
Open Console in Utilities & see if there are any clues or repeating messages when this happens.
Open Network Utility in Applications>Utilities>Info tab, select Airport/Wifi & what is the Link Speed & are there any Errors/Collisions on the right?

I tried updating my iPod touch 4th gen and now the screen is bright blue or flashing white and black lines.ive tried the whole home and power button thing but it only brings up the apple icons then goes back to the blue or other screen.please help?

I tried updating my iPod touch 4th gen and now the screen is bright blue or flashing white and black lines.ive tried the whole home and power button thing but it only brings up the apple icons then goes back to the blue or other screen.please help?

This has worked for some others.
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- Try on another computer
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

How can I turn off computer screen, when mirroring to apple tv?

How can I turn off computer screen, when mirroring to apple tv?
Thanks.

Welcome to the Apple Community.
You can't. Mirroring is just what it says, it mirrors exactly what is on your computer screen, if there is nothing on your computer screen, that's what you will see on your TV screen.

What causes my mac computer screen to flash scramble words and black line across the screen when on the internet

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