IMac black screen when streaming to Appletv

Does anyone have any idea why my 1 year old iMac gives me a black screen when we are watching a movie with our Appletv. Once we stop streaming the movie the iMac will respond again. It is running Lion with all the software updates.

For the unplugging and reconnecting, be sure to follow this procedure precisely.
http://support.apple.com/kb/HT3964
You should disconnect ALL cables when you do this procedure. When you reconnect the power cord, if you have been using an old or crowded power strip, try connecting it directly to a wall outlet, at least for this test. Power it up with just nothing connected, except for the power cord.

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Apple TV blurry black screen when streaming from iMac?

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I've found out it is an Mavericks 10.9.2 and 10.9.3 failure! Online I have found more people with the very same Problem, and all of them are running 10.9.2/3 - ON THEIR IMACS (different Models)!
My Apple TV and Streaming Services were functioning just fine 2-3 Monts ago, the only thing that changed was Updating my iMac Mid 2011 to 10.9.2 -> Then i've got the black screen when streaming, could not activate DisplayMirroring, when i played something in itunes or VLC the sound went through AppleTV but no video.
Then have checked it with iPad 2 = OK, iPhone 5 = OK, MBP Early 2008 with SnowLeopard = OK,
so i decided to Install an 10.9 on an external drive - and guess what? It works! Tried to Update (ComboUpdate) to 10.9.1 and it was still OK, got the BLACK SCREEN after ComboUpdate 10.9.2, and tried to Install 10.9.3 just to see if it will solve the problem -> NOT
this must be a joke!

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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.
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2 weeks Yoya 2 pro out of the box, and get a black screen when reaching the tablet mode (back of the lid touching the back of the laptop base).
I try hanged the setting under power management, with no success. When reaching the tablet mode, I get the same result as closing the lid in laptop mode.
I connect my Yoga 2 to a TV through the HDMI and can see the screen and interact with the black screen (not easy to touch the right spot).
My bios is updated and I have Windows 8.1.
Any suggestion???

I found the answer to my problem at
http://forums.lenovo.com/t5/Idea-Windows-based-Tablets-and/Yoga-2-Bios-Update-Crash/m-p/1322487/high...
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I attempted to use netflix on my MacPro safari 10.5.8, I get a blank black screen when I attempt to watch a video, Has anyone encountered and solved this dilemma?

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I also have downloaded netflix "Silverlight" I believe successfully...at least acoording to the popup at the end of the Silverlight download "You have successfully downloaded Silverlight"

Why do I get a black screen when i click on a PDF in a web page?

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Hi,
From your Safari menu bar click Safari / Preferences then select the Extensions tab. If you have any installed, turn that off, then relaunch Safari. Try a PDF file.
If it's not Extensions, open a Finder window. Select MacintoshHD in the Sidebar on the left. Now open the Library folder then the Internet Plug-Ins folder. If you see any files such as this:
AdobePDF Browser or Viewer Plug-in
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Carolyn :-)

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Since i updated to ios 6 my iphone goes to a black screen when it is in use. I could be texting and 5-10 sec later it goes to a black screen and than to the home page. Its also will be when playing games and so on. Can you please help me with this? I have tried resetting my phone, press the home button 2 time and canceling any running apps and even press home and powering button and still does the same thing. I need help!!!! Any suggestions?????

Try This...
Close All Open Apps... Sign Out of your Account... Perform a Reset... Try again...
Reset ( No Data will be Lost )
Press and Hold the Sleep/Wake Button and the Home Button at the Same Time...
Wait for the Apple logo to Appear...
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Release the Buttons...

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Error 1604
This error is often related to USB timing. Try changing USB ports, using a different dock connector to USB cable, and other available USB troubleshooting steps (troubleshooting USB connections. If you are using a dock, bypass it and connect directly to the white Apple USB dock connector cable. If the issue persists on a known-good computer, the device may need service.
If the issue is not resolved by USB isolation troubleshooting, and another computer is not available, try these steps to resolve the issue:
Connect the device to iTunes, confirm that the device is in Recovery Mode. If it's not in Recovery Mode,put it into Recovery Mode.
Restore and wait for the error.
When prompted, click OK.
Close and reopen iTunes while the device remains connected.
The device should now be recognized in Recovery Mode again.
Try to restore again.
If the steps above do not resolve the issue, try restoring using a known-good USB cable, computer, and network connection.
Error 1600, 1601, 1602
Follow the steps listed above for Error 1604. This error may also be resolved by disabling, deactivating, or uninstalling third-party security, antivirus, and firewall software. See steps in this article for details on troubleshooting security software.

My Macbook Pro has a black screen when running in Bootcamp Windows 7. Since I updated the mac side my windows side now starts up with completely black screen - no prompt, nothing, Cap keys still light up as does mouse and DVD drive seems to run.

My Macbook Pro has a black screen when running in Bootcamp Windows 7. Since I updated the mac side my windows side now starts up with completely black screen - no prompt, nothing, Cap keys still light up as does mouse and DVD drive seems to run.
Will not show up in safe mode, will not show when started from Windows 7 DVD.
I suspect the Mac update wiped out my PC video drivers but can not think of a way to re-install?
Can see the PC volume from Mac side with files.
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Specs:
2009 Macbook Pro, 3.06 GHz Intel 2 core, Max 10.6.8.
Model Name:          MacBook Pro
Model Identifier:          MacBookPro5,2
Processor Name:          Intel Core 2 Duo
Processor Speed:          3.06 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          6 MB
Memory:          4 GB
Bus Speed:          1.07 GHz
Boot ROM Version:          MBP52.008E.B05
SMC Version (system):          1.42f4
Serial Number (system):          7302300GANE
Hardware UUID:          B2D4B4B4-CD92-5C7A-BDC2-527D30DD8DF3
Sudden Motion Sensor:
State:          Enabled

EDIT: RESOLVED
For anyone else who finds their way here like I did, this link did it for me: https://forums.geforce.com/default/topic/527599/windows-8-issues-solved-please-r ead-if-you-39-re-having-black-screen-and-or-flickering-/
Specifically, the posts by Dunsany and valkyr did the trick. I booted in safe mode, uninstalled and deleted the Nvidia driver, disabled automatic driver installation, and restarted normally. I then manually downloaded and installed the previous Nvidia driver for my graphics card (which at the time of this writing was 335.23, rather than the latest which was 337.88), and everything is now bueno!
Two hiccoughs along the way: First, when I tried to uninstall the Nvidia driver the first time, when I restarted I got the login screen (which was a good sign), but it quickly went black again. I powered down, restarted in safe mode again, and repeated the uninstallation process, and it worked the second time. Second, when I started the manual install of the 335.23 driver, the computer played a sound similar to the one for disconnecting a USB device, and the screen went black. I'd seen a lot about trying to increase the brightness (though it hadn't worked up to this point; but if you haven't tried it yet, might as well); I tried it, and it worked! So far I'm back up and running. [/fingers crossed]
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I hope I helped
thanks
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Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
* On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
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See response here for your question:
http://groups.google.com/group/TeachMeVC/browse_thread/thread/d557f284b35e911c#
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IMac black screen when streaming to Appletv

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