Why does my imac get a black screen when switching on

why does my imac get a black screen when turning on, and logging in is very slow.

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.
Press the power button to turn the Mac back on.
Then I would reset the PRAM by rebooting the iMac while simultaneously holding the Command-Option-P-R keys until the machine restarts a second time.
Let us know if these procedures don't solve the problems.
Hope this helps

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

why do I get a black screen when i click on a PDF in a web page? Firefox works as is should.

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
Move it to the Trash, relaunch Safari.
Carolyn :-)

Why do i get a black screen when i open a pdf file?

why do I get a black screen when I open a pdf file?

I'm seeing the same thing, as well as "zombie" AcroRd32.exe *32 processes.
(I'm seeing this on Windows 7, not Windows 8.)

Why do I get a black screen when I start my macbook pro?

why do I get a black screen when I start my MacBook pro?

Hello szimmerli2 and welcome to Apple Support Communities,
It will help us diagnose your problem to know the exact model, size, year built, RAM installed and OS you're running.

I am getting a black screen when I go into my credit card web pages under safari when I ask to see or view my statements. A black screen comes up.

I am getting a black screen when under safar I go into my credit cards web pages and want to view or see my
statements. This only happens in these web pages no others.

''Zenos [[#answer-671962|said]]''
<blockquote>
I think we need a screenshot.
https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem
How does typing in caps relate to being deaf? Or was that a joke?
I'LL SAY IT AGAIN, LOUDER:
I THINK WE NEED A SCREENSHOT.
HTTPS://SUPPORT.MOZILLA.ORG/EN-US/KB/HOW-DO-I-CREATE-SCREENSHOT-MY-PROBLEM
</blockquote>

Getting a black screen when publishing in Captivate 4.

I am getting a black screen when publishing in Captivate 4. I have noticed patches that care for this with later versions, but is there something available for version 4.

Thank you for your reply, I work for Citi and am personally unable to make decisions about updating our Flash player version. Is there a patch for this issue for Captivate 4?
Date: Mon, 4 Feb 2013 13:29:16 -0800
From: [email protected]
To: [email protected]
Subject: Getting a black screen when publishing in Captivate 4.
    Re: Getting a black screen when publishing in Captivate 4.
    created by Shekhar_Dhiman in Adobe Captivate - View the full discussion
Hi there, Thanks for reaching Adobe Community. Please accept my apologies for the same. Try updating your Flash Player to the latest version and then republish the project. This black screen issue was first discovered few months ago after the first Flash Player 10 release. The link to download the latest version of flash is here: http://get.adobe.com/flashplayer/ Newer versions of Flash Player do not result in the same issue. Thanks!Shekhar
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On my iPad2 I get a black screen when Itry to open FaceTime. Others can contact me and the camera and audio work. How do I fix this problem?

On my iPad2 I get a black screen when I attempt to open Face Time. Others can contact me and they come in with video and audio. I can chat with them as well. Is there a fix for this? I have verified my email address twice. I have turned FaceTime on and off several times as well.
Thanks,
Bill

I double clicked the round button when the icons appeared I held down and selected the FaceTime icon while it was shaking I selected the minus sign on the FaceTime icon closing it out. Then I restarted the iPad and bingo FaceTime works now.

I get a black screen when trying to watch a movie on itunes

I have a laptop that I take to work. I am a teacher at a school. When using my school internet, I am able to see my movies in itunes. But, when I take my laptop home and use my internet, I get a black screen when trying to view a movie.

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
Make sure that you allow pages to choose their colors and that you haven't enabled High Contrast in the Accessibility settings.
*Tools > Options > Content : Fonts & Colors > Colors : [X] "Allow pages to choose their own colors, instead of my selections above"
If images are missing then check that you aren't blocking images from some domains.
*Check the permissions for the domain in the current tab in "Tools > Page Info > Permissions"
*Check that images are enabled: Tools > Options > Content: [X] Load images automatically
*Check the exceptions in "Tools > Options > Content: Load Images > Exceptions"
*Check the "Tools > Page Info > Media" tab for blocked images (scroll through all the images with the cursor Down key).
If an image in the list is grayed and there is a check-mark in the box "<i>Block Images from...</i>" then remove that mark to unblock the images from that domain.
Make sure that you do not block third-party images, the permissions.default.images pref should be 1.
*http://kb.mozillazine.org/Images_or_animations_do_not_load
There are also extensions (Tools > Add-ons > Extensions) and security software (firewall, anti-virus) that can block images.
*http://kb.mozillazine.org/Images_or_animations_do_not_load
*https://support.mozilla.org/kb/Images+or+animations+do+not+show

I get a black screen when I enlarge a thumbnail to edit

I get a black screen when I enlarge a thumbnail to edit

If it's just a black screen and no exclamation mark in the middle then it's likely a permission issue.
Make a temporary, backup copy (if you don't already have a backup copy) of the library and try the following:
launch iPhoto with the Command+Option keys held down and rebuild the library.
select the options identified in the screenshot.
Click to view full size
3 - launch iPhoto and try again.
OT

Satellite C55-A-1N1 Black screen when switched on

I've had my laptop for 7 months, I've had a lot of problems with it from the beginning.
It has always run slow and started disconnecting itself from the internet for no reason.
A few days ago it refused to connect to the Internet at all and now when I switch it on I just get a black screen.
No beeps or logos just a black screen. It powers up OK, and I've tried switching on while plugged in and with just the battery running.
It's still under warranty but I wonder if anyone has any suggestions. I'm really disappointed as my last Satellite was brilliant for years, had no problems.

Are you able to access the BIOS?
To access the BIOS press power button following by F2 button.
In case this isnt possible try this:
Disconnect AC adaptor and remove battery.
Now press and hold power button 30sec long.
After that connect the AC adaptor and battery and press the power button once again to power up the notebook.
Is this possible? Feedback would be appreciated

20" imac gets random black screen and wont wake up.

O.K. this imac randomly goes to a black screen while your using it. It looks like it's asleep accept the light in the front doesn't pulse and it wont wake up.
If I hit the power button to put it to sleep I can then wake it up.
I tried resetting the SMU but have had no luck (not sure if it's even resetting seeing the date and time are still good) not sure why seeing resetting the SMU is a very simple processes.
It's a 20" intel imac 2GHz duo with system 10.4.11 (early 2006)
I was going to reinstall 10.4.11 to see if that helps and wanted to see if anyone else knows what to do. Its very random and seems to be getting worse, sometimes as soon as I get it fixed it goes black again. It usually only takes 15-30min after start up and doesn't matter if your using it or not.

Hi all,
my first mac ever was also an Early 2006 20" iMac and it had the same symptons as yours late last year.
Tried all I could think of and then took it to an Apple Dealer here in Hamburg.
Turned it was the Power Supply Unit (both of them) and a repair (out of Applecare obviously) would have been in the range of about 500 Euros (material plus manhours).
So I decided to not get it repaired.
Regards
Stefan

Why do I get a black screen when I move video to laptop

Hey
Not sure If this is an io6 thing, before I upgraded I simply plugged my ipad into my windows laptop went to the right folder and copied the video across, no probs.
Now when I do this QuickTime opens but it has a black screen although the sound is there.
What is going on, nothing I do seems to fix it. I have used imovie on ipad for some videos although it is effecting those that have not been through imovie as well.
Any suggestions.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is localized to your user account, or is system-wide. Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select “Help” from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Any application you run will behave as if you were running it for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
As Guest, launch the application(s) and test. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.

Why does my MBP get the grey screen after backing up to external hard drive???

(firstly, i'm a complete moron on terminal, though i managed to unlock the external HD. i appreciate the simplicity of mac, i.e. a moron in many ways.)
for some bizarre reason, every time i copy files to the external HD, i end up with a lock on the external HD and the dreaded spinning grey screen when i restart the MBP. i've managed to get rid of the grey screen by reinstalling with the snow leopard DVD without formatting, but this is obviously not practical. am i doing something wrong??
the last time i did this, i dragged my "user" files. then i dragged my entire internal HD into a folder created in my external HD. i've done this with my powerbook and older OS without issues, but OS 10.5 and 10.6 don't seem to work without ending up with the spinning grey screen and a lock on the HD.
thanks in advance for your input. (and please keep it simple...)

no, but it's definitely not due to a corrupt external drive. this happened with two different brands of drives. the first time with a lacie, i thought my MBP hard drive was damaged, but it was determined that a reinstall was all it needed. the same thing happened with an OWC. they both work fine. there seems to be some kind of a permission problem which gets screwed up somwhere.

Why does my iPad have a black screen and won't turn on even when I try charging it

I just got a survivor case today and put it on my iPad and it stopped working and just has a black screen even when I try charging it

Not charging
1. Reset iPad
2. Try another wall socket
3. Try another cable (make sure it's an original Apple cable)
4. Try another charger (make sure it's an original Apple charger)
5. Clean Lightning port with compress air or new paint brush

I'm Getting a Black Screen When I Try to Watch Some of My Movies

I can hear the movie, but I can't see anything; it is a black screen. It only happens to some videos (all of which I've downloaded from iTunes). I tried removing and re-adding the movies, and it hasn't changed anything.

Hi kibbles1053,
Welcome to the Support Communities! The article below will help you troubleshoot the issue you are having with viewing some videos on your iPod classic:
iTunes: Frequently asked questions about viewing and syncing videos
http://support.apple.com/kb/HT2729
Why do I sometimes not see video but I hear audio, and other times I don't hear audio but I see video?
If you hear audio but don't see video, refer to iPod plays audio but not videos, movies, or TV shows. If you see video, but don't hear audio, refer to iPod plays video but not audio of some exported files.
iPod plays audio but not videos, movies, or TV shows
http://support.apple.com/kb/TS1894
Symptoms
If the audio for movies plays through the headphones and you see "Now Playing" on the iPod screen with a progress bar, but the video does not appear on the iPod screen, then you may have the TV Out video setting turned on. To change your TV Out setting so you can view video with your sound:
Navigate on your iPod to Videos > Video Settings
Select TV Out to set it to Off or Ask.
If the issue continues, make sure you are accessing the video through the Videos menu. If you have a video mixed in an audio playlist, you also won't be able to see the video.
If you continue to have issues with a movie you have purchased and downloaded from the iTunes Store, click on the link below:
How to report an issue with your iTunes Store, App Store, Mac App Store, or iBookstore purchase
http://support.apple.com/kb/HT1933?viewlocale=en_US
Cheers,
- Judy

Why does my imac get a black screen when switching on

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