Imac does start up chime but then black screen

thats about what my imac do:
http://www.youtube.com/watch?v=TR9V6AeKLko
Not a vid from me but its what it does.
Was his diagnostic of motherboard failing right?
Also I reseted pram and smu with no changes at all.
I cant connect another monitor since i dont have one.
Apple is kind of a long way from my home so I want
to have an idea of whats happening.
Thanks for any help

Well i think the board finally fried today. I waked it up from sleep, got a screen for half a second, then a strange noise and a black screen.
Now even with an external monitor i get no image. The screen says signal, no signal, signal, no signal, etc. My friend has an Imac like mine that he doesnt use since he got a macbook pro and told me if i needed pieces, i just have to tell him. So if you got an idea of whats wrong, I'm open for suggestion.

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When I get to the login page on my macbook, I type in my password and it starts to load, but then the screen turns blue and it goes back to the login. What should I do?

I was having some problems with my mac, safari and itunes was freezing alot. I have to force shutdown and when I tried to start up again i get to the login page, type in my password and it starts to load, but then the screen turns blue for a few seconds and it goes back to the log in screen. What should I do?
Please Help!!

Somewhat similar problem:
Put in the password, hit enter, the screen goes blue for half a second, then goes back to login screen and carries on logging in as usual. Drives me mad. It doesn't happen with a fresh Lion installation, nor if booted into safe mode. On the machine in question it also happens to new user accounts.
I've removed all login items, including Startup Items and Launch Demons (pun intended) and Agents, I've compared system login plists with a fresh Lion installation - can't see differences. I've removed Little Snitch and PeerGuardian (no more third party kexts).
@Carolyn: I've done disk maintenance with DiskUtility and fsck and even DiskWarrior, cleaned caches, etc. etc.
Any ideas would be gratefully received.
Sorry for trying to hijack the thread (as it's not about Lion), but it seemed dead anyway.

When I get to the login page on my macbook, I type in my password and it starts to load, but then the screen turns blue and it goes back to the login.

When I get to the login page on my macbook, I type in my password and it starts to load, but then the screen turns blue and it goes back to the login.
Iv tryed this numerious times still keeps going back to pasword. Can not get any further. Tried restart holding shift key.. still nothing. What do i do?

Thank you for your help.
I couldnt get to the hard drive/ desktop. Soft login not even working. So i could not do any of that.
In the end i took it to Apple and its actually the hard drive on its way out. A common issue with that series of Mac. Funny seeing i dont use this mac much. However being 2.5 years old and out of warrently, Apple have recognise this issue with this series/ Model and installing a new hard drive at no cost.
Very luck and greatful. And not feeling so dumb that it was something i did or could troubleshoot myself.
Hope this helps others that it just might be your hard drive failing.

My MacBook Pro will not start up and has a black screen

ON start up I get the start up chimes and a black screen. The keyboard lights up. It is a 15 inch, 2013 laptop running the latest Yosemite OS. I have tried holding down various keys like shift, space bar, option with no fix. I have unplugged all external devices. Any ideas? Thanks, Mark

This didn't help. I was restarting about 16 times and the screen came alive and it worked for several days. I was editing photos in aperture (last time I was watching a video on Facebook ) and the screen froze. After several minutes I forced a hard restart and the screen is again black. I tried multiple restarts,unplugged all the hard drives, tried multiple restarts, tried resetting pram and smc with no return of the screen. On a restart the chime occurs like a normal start but the screen is black. The keyboard lights up, and it acts like the start up screen is waiting for an input but I can't get it to take my password

MacBook Pro will not start up, get start up chime but screen does not light up. Any help?

Upon start up I hear optical drive checked, then get a start up chime but the screen does not light up. I have shut down by holding down power butto for 10 seconds also pulled battery and A/C power.

I had this same issue but after a new hard drive/ram install.
What solved the issue - and I hope this helps someone else who has the same problem:
1). Install new hard drive (with or without osx pre installed) or leave old one in in your case.
2). Remove all ram
3). Power on and wait 1 minute
4). Hold power button until it turns off
5). Install ram
6). Power back on
7). BOOM! It works again.

Encore WT8-A starts to turn on but then the screen goes black!?

This began nearly a week ago, I had just installed a few apps and my battery died. When I tried to turn the tablet back on it showed a dark blue or even greyish screen. I waited over night and tried turning it out again...this time it began to start, showing the Toshiba start up screen, but then the screen went black.
I have tried to hold the power button, does not work. It will only partially work while on the charger, nothing happens unless it is plugged in.
I did do a Google search and found out that this could be a Bitlocker problem so I tried once again after waiting a few days, I was able to get to a screen allowing me o input a recovery key. The recovery key worked and then I was sent to a page saying that my PC started wrong, restart. When I allow it to do so the process starts all over again...
This tablet is only about 6 months old and I just started using it regularly a few months ago. It hasn't been damaged and I am certain there is no virus because I have software that I run weekly. I am clueless as to what to do to make this work. Has anyone else experienced this problem, if so how was it resolved?

It seems that a few months ago Toshiba started shipping devices with Bitlocker enabled (one I bought a year ago did not have, one I bought in November did. I turned it off and decrypted the drive immediately.This seems to be an industry problem and not just Toshiba. "Someone" made a firmware revision that turned it back on since other Tablets have reported the same problem.
I have seen reports of three stages of Bitlocker:
1) Not encrypted - no key
2) Encrypted using a personal key (may be stored in your Microsoft account and recovered from there - is about 25 digits)
3) Encrypted but Bitlocker turned off. Key stored on hard drive and "decrypted on the fly". I suspect this is the problem and happens if Bitlocker is turned off but the drive is not decrypted (takes several minutes). If something happens to "lose" the key then there is a problem. I suspect the key is stored in the firmware (BIOS) and an update may wipe it..
What I would do for any tab is two things:
1) Open diskmgmt.msc and see if any drive mentions Bitlocker
2) Go to "Search" and enter "drive encryption". See what it says
If either mentions Bitlocker or "drive is encrypted" then I would go to Control Panel>Security>Bitlocker and decrypt the drive (not just turn off). If you need disk encryption then make sure you keep a copy of the key offline.
If that does not work or it is locked already then a full recovery with reformat may be needed.

HT4241 Does dvi to HDMI adapter works on mid 2007 iMac? Some how my iMac detect the sharp tv but the tv screen is black.

Does dvi to HDMI adapter works on mid 2007 iMac? Some how my iMac detect the sharp tv but the tv screen is black.

you need mini dvi to hdmi cable
http://store.apple.com/us/product/M9321G/B/apple-mini-dvi-to-dvi-adapter?fnode=5 1
and
http://store.apple.com/us/product/HA835ZM/A/belkin-hdmi-to-dvi-d-cable-2-m66-ft? fnode=51

TS3623 Pressing play on purchased downloads and it starts to download but then returns to the play button. This is for all the purchased items I have. However pressing play on previews works. Please advise.

Pressing play on purchased downloads and it starts to download but then returns to the play button. This is for all the purchased items I have. However pressing play on previews works. Please advise.

Welcome to the Apple community.
A number of people have reported similar issues recently, many appear to have found a discrepancy of some kind in their account settings and making changes to these settings or simply resetting them has resolved the matter.
Check your account details are correct, check that you are using the correct details for Location, Region and Time Zone. You may want to change these settings and then change them back to see if that helps.
Also check your payment details, make sure your details are exactly how they appear on your credit card statement, you might also try changing some of those details, saving them and changing them back again.
You might also try logging out of and then back into your iTunes account (Settings > iTunes Store > Apple ID’s > Sign Out) and restarting your router. (Some have reported that after doing this, they need to check for rentals even though it may report that there aren’t any, after which rentals once again appear in the ‘movies’ feature)
Rentals should appear under their own heading in the ‘Movies’ feature, you might also check at Settings > iTunes Store > Check For Rentals.
At this point in time, I’m wondering if this could be related to (but not restricted to) the new feature that allows others to come into your home and use your Apple TV to download and play their content on your Apple TV without logging into their account on your Apple TV. The Terms of Use for iTunes Store content have always been to require you to only purchase and play the content from the store in the location where you live and to use a credit card registered in that location. Previously Apple seem to have been somewhat lenient on enforcing such restrictions, perhaps now they are not. However I don’t really have any evidence to support this suggestion, except that changes made to accounts in these areas do appear to be helping many.
If you are successful in resolving your problem, perhaps you would let us know exactly which action resolved the problem for you. If you are having this problem to begin with, can you also tell us your location.

Iphone 4s is working for example can play,music recieve texts ,calls ect but has black screen and have tried the force shutdown method but still can see what im doing on the screen

iphone 4s is working for example can play,music recieve texts ,calls ect but has black screen and have tried the force shutdown method but still can see what im doing on the screen

Did anything happen to prior to your phone acting this way? It sounds like your screen is dead, but it is hard to say without knowing what what the cause.
1) was this a gradual problem? Did the phone screen start dimming a couple months ago and now has degraded or after some event (known or unknown to you), the phone started behaving this way.
2) Can you give more specifics on the problem? You said you have a black screen, but also you can see what you're doing on screen. Is the screen just really dim? Is the screen completely black? Does anything else besides attempting to reset the device cause it to flash white?

Facetime on ipod starts to open but then closes

On the iPod when I start to open FaceTime the program starts black background but then the screen automatically closes. If you look at the open Apps is still apears open but you can't use it. It will accept incoming, but you can not send out. iOS 8.1.2

Does the front camera work in Camera app?
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: Back up and restore your iOS device with iCloud or iTunes
- Restore to factory settings/new iOS device.
If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

My imac doesnt turn on, i get the light but a black screen.

my imac doesnt turn on, i get the light but a black screen.
does anyone know how to get the screen working
my imac doesnt turn on, i get the light but a black screen.

Which iMac? Which OS?

HT204400 Light is flashing continueously on the front of the apple tv. No picture and no sound. Does anyone know what is wrong? Everything is plug in correctly. When I disconnect everything and re plug it in the apple icon comes up, but then blank screen

Light is flashing continueously on the front of the apple tv. No picture and no sound. Does anyone know what is wrong? Everything is plug in correctly. When I disconnect everything and re plug it in the apple icon comes up, but then blank screen with no sound and no picture. Does anyone know what is wrong?
l have an apple tv 2 generation please help me

Welcome to the Apple Community.
If your problem persists get yourself a micro USB cable (sold separately), you can restore your Apple TV from iTunes:
Remove ALL cables from Apple TV. (if you don't you will not see Apple TV in the iTunes Source list)
Connect the micro USB cable to the Apple TV and to your computer.
Reconnect the power cable (only for Apple TV 3)
Open iTunes.
Select your Apple TV in the Devices list, and then click Restore.
(You may already have a micro USB cable if you have a camera or other digital device)

The screen on my macbook has malfunction. When I change the brightness to zero and return to the first level of brightness it works briefly but then the screen starts to flicker brightness and quickly extinguished.

The screen on my macbook has malfunction. When I change the brightness to zero and return to the first level of brightness it works briefly but then the screen starts to flicker brightness and quickly extinguished. It seems to be a bad contact, it would not be normal for a quality product that should have, he has less than two years of use. Not because of the bad use or crash. Someone with the same problem or can help me? It's really a contact problem? I've done all the procedures recommended by the online support. Thanks.

Hey everyone in Apple world!
I figured out how to fix the flashing yellow screen problem that I've been having on my MBP! Yessssss!!!
I found this super handy website with the golden answer: http://support.apple.com/kb/HT1379
I followed the instructions on this page and here's what I did:
Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
I went through the 6 steps above twice, just to make sure I got rid of whatever stuff was holding up my bootup process. Since I did that, my MBP boots up just like normal. No flashing yellow screen anymore!!
(Note that I arrived at this solution when I first saw this page: http://support.apple.com/kb/TS2570?viewlocale=en_US)
Let me know if this works for you!
Elaine

Logging out does not drop me to console but a black screen

Recent pacman -Syu upgraded me to latest xorg-server and I have this problem: logging out does not drop me back to console but a black screen and after 30 seconds, a blinking cursor. Nothing works and I have to reboot. If I choose to reboot (instead of logout) I get the same result except that eventually the computer reboots. Using nv - no problems. Using simple nvidia (single screen) - no problem. (I have a monitor and tv-out setup). Problem remains whether I use xfce4 or fluxbox. And the ctrl-alt-backspace keyboard shortcut results in the same black screen. Xorg.0.log tells me nothing. Before the upgrade, no problem.
I usually use startx and I have ck-launch-session etc in my .xinitrc. I use the latest nvidia-96xx driver and have no other X problem. Everything works, including the tv-out.
This is a minor inconvenience really and I usually switch to a console and as root killall X if I need to log myself out for any reason. But if anyone as a clue as to why this is so, or suffers the same problem, do let me know. Thanks.

Thanks guys...
@ckristi - I don't use kdm. I startx from console when I want to go into X.
@madtux - I guess I will have to read up on kernel mode setting and KMS - I actually don't know what you are referring to although I have seen KMS refered to in this forum with reference to xorg. Any links? Do note no problems with nv and single monitor nvidia. Hopefully the cure is not worse than the disease.

Itunes will not download. gets close but then a screen pops up saying ' Service apple mobile device failed to start. Verify that you have sufficient privilages to start systme services'. Please HELP!!

gets close but then a screen pops up saying ' Service apple mobile device failed to start. Verify that you have sufficient privilages to start systme services'. Please HELP!!

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Imac does start up chime but then black screen

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