What might my problem be if my display will not come on after waking the computer from sleep or powering it on?

When I try to wake the MBP from sleep (opening the lid, pressing spacebar, or pressing power button), the computer display doesn't come on. The light on the front shows it is awake but there is no display or backlight though the caps lock lights up. I have tried an SMC and PRAM reset to no avail. I tried to start up in safe mode but now as soon as the screen comes up to select the user the display goes out and I don't know how to get it to stop trying to boot up in safe mode. Any suggestions as to what the problem might be and some possible solutions?

2.53 GHz Core 2 Duo
4GB
13 inch Mid 2009

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I have a password problem. After importing data and settings from one MacBook Pro to a new one, I have to put my iCloud password in when re-starting, but the password from the old computer in when waking the computer from sleep.

I have a password problem. After importing data and settings from one MacBook Pro to a new one, I have to put my iCloud password in when re-starting the new computer, but the password from the old computer in when waking the computer from sleep. I want to use my iCloud password on both computers consistently. How can I fix this?

The only other place to change a password for the computer login is in Users & Groups preferences. But I don't really know enough here to fix your problem. You can try fixing the keychain:
iCloud- Frequently asked questions about iCloud Keychain
Tutorial: Resolving Keychain Issues
If you can't access your keychain, or forget your password If you can't get into your keychain file because you've forgotten your password or the keychain file appears to be corrupt, there are a couple of options.
First, if you've forgotten your password, you can use the "Keychain First Aid" utility to make the keychain password the same as the login password. This can be accomplished via the following process:
1. Open Keychain Access (located in Applications/Utilities)
2. Go to the "Keychain Access" menu and select "Preferences"
3. Click the "First Aid" tab
4. Make sure the "Synchronize login keychain password" box is checked
5. Close the Preferences window
6. Go to the "Keychain Access" menu and select "Keychain First Aid"
7. Enter your username and password
8. Click the "Repair" button
The second option is to completely delete your keychain then recreate it. This routine is useful if your keychain appears to be corrupt or otherwise inaccessible. This can be accomplished as follows:
1. Launch Keychain Access (located in Applications/Utilities)
2. Click "Show Keychains" in the lower-left corner of the window.
3. Select the problematic keychain from the left-hand pane.
4. Navigate to the "File" menu and select "Delete Keychain '(name of keychain)'"
5. Check all options for deletion and press "OK"
6. Create a new keychain by going to the "File" menu, then "New" and selecting
"New Keychain"
7. You can now make this keychain your default if you desire by selecting it, then
going to the "File" menu and selecting "Make '(name of keychain)' Default"
Login as root and perform repair In some cases, problems with keychains can only be resolved when logged in as the root user.
First, you want to enable the root user:
1. OS X Mountain Lion: Enable and disable the root user
2. OS X Lion: Enable and disable the root user
3. Mac OS X 10.6: Enabling the root user
4. Enabling and using the "root" user in Mac OS X
After enabling the root user, and logging in under this account, again open Keychain Access. First attempt repairs using Keychain First Aid, and failing that, delete then recreate the keychain as described above while logged in as root.
Persistently asked for stored passwords If you are persistently asked for passwords in various applications that you have specified should be remembered in a keychain, your "login" keychain may not be active for one reason or another.
Navigate to ~/Library/Keychains/ (this is the Library folder inside your user's home folder). Find the file named "login.keychain" and double-click it.
Failing that, select the "login" keychain within the Keychain Access application and make sure it is the default keychain by going to the "File" menu and selecting "Make 'Login' Default"
Turn off Keychain synchronization in applications having problems If specific applications are experiencing issues when accessing password-protected material, the Keychain may be to blame.
The above comes from an article published on MacFixit.com.

Got ipod4 Dec 2010 bought music with my ipod4 in dec 2010,jan 2011, and feb 2011 and i tunes will not reconizie them i have the reciept from when i purchased from i tunes store at that time. what is the problem anybody know?

Got ipod4 Dec 2010 bought music with my ipod4 in dec 2010,jan 2011, and feb 2011 and i tunes will not reconizie them i have the reciept from when i purchased from i tunes store at that time. what is the problem anybody know?

Is your computer authorized with the same account that you use to buy the muisc in iTunes?
More info here: About iTunes Store authorization and deauthorization
Did you try to transfer your music by right clicking on your ipod in the device list and choosing "transfer purchases"?
Did you ever sync your ipod to your computer?

Not detecting external display after waking up MBP from sleep mode

I am a recent owner of a MBP and enjoying it. However, one problem that I can't seem to find a solution to is the external display problem after sleep mode.
When I first boot up the Mac and plug in my Dell external monitor via the mini adapter, there is no problem with detection or display. However, every time I put the MBP in sleep mode and then wake it up again, the external monitor does not "wake" up and my MBP only displays my normal screen on the Mac.
I tried to 'Detect Displays' to no avail and the only solution is unplugging the mini connection and plugging it back into the MBP for the MBP to re-detect the external monitor.
Although this is a quick fix in itself, I do not want to wear out the mini port by doing this every timeI come out of sleep mode. Any solutions so that the external monitor will detect the MBP waking up from sleep and display properly? Thanks!

And same problem here.
Using a MBP 2.66 i7 with a Dell 3008WFP that's connected to the MBP through DisplayPort. It works some of the time but once in a while (only been using the new MBP for a couple of days now) the monitor won't come out of sleep mode. Turning it off/on causes OS X to completely ignore the monitor. I was able to get this setup to work again by pressing 'Detect Displays' in the System Preferences pane but most of the times that doesn't help. The only sure way to get the monitor working again is by booting into Windows through Bootcamp, Windows is able to use the monitor, if I reboot after that OS X sees the monitor again.
Also saw a magenta line/stripe on the left side of my monitor and the monitor sometimes makes a buzzing sound when connected to the MBP through DisplayPort. That's what you get by using bleeding edge tech I guess :\ Only alternative is buying the mini-DP to dual-DVI connector but paying $99 just to be able to use an external monitor is rather insane. Besides that lots of users are having problems with this adapter.

My iPhone 5 screen is black and will not come back on. The phone still works when paired with my vehicles Bluetooth what's wrong with it, and can I fix it?

My iPhone 5 screen is black and will not come back on. The phone still works when paired with my vehicles Bluetooth what's wrong with it, and can I fix it?

I have a similar problem. I restored my iPhone 5 to the latest available OS. After completing the process the phone never restarted. The phone was fully charged when I restored it but now refuses to charge past the red battery icon. I have been able to get the phone in UFD mode several times and have been able to load the new OS on the phone. The Apple logo does come on and the software fully loads. iTunes tells me the phone will restart but never does. I left it to charge all night but it never appeared to load the battery. This morning I went to the Grand Central Terminal apple store for help. A woman at the store plugged the phone in but it never charged. She absolutely refused to believe that I got my phone in UFD mode and loaded any software on. I don't think it is a battery issue. The only solution I was given was to buy a new phone. Repairing it was out of the question. At this point the phone is completely useless. Thanks in advance for the help.

My ipad screen is black and will not reset and does not come back after restoring, the info is still on internal because i can see it on itunes in the apps catagory it's the display is not working, can see backlight but black...does anyone know how to fix

my ipad screen is black and will not reset and does not come back after restoring, the info is still on internal because i can see it on itunes in the apps catagory it's the display is not working, can see backlight but black...does anyone know how to fix, other than take it to apple.
thanks!

The wish list only works on apps you have to pay for. To get it tap the icon of the app you want to save. After it opens at the upper right corner is a box with a arrow. Tap that then tap add to wish list list in the box that opens.

HT1338 Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Mac mini display connection will not come back after sleep, I have to shut down and restart the monitor.

Finder icon on dock, macintosh hd, library, launch agent - delete all files & restart sleep to test
also
Finder icon on dock, macintosh hd,
Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist
delete file & restart sleep to test.

My Ipod touch says i have to connect it to iTunes so i can restore it but it will not restore even after following the steps to fix the problem.

My Ipod touch says i have to connect it to iTunes so i can restore it but it will not restore even after following the steps to fix the problem.

After pressing restore and after l5 minutes or so It comes up with the error 1611 and I followed all the steps but it still won't work.

23" Display did not come on after disconnecting

Recently powered down Mac Pro (2007) and relocated to another room along with 23" Cinema display. Powered on and display did not come back on. Checked connection to computer. Only other connection to display is USB from Apple keyboard. Any suggestions regarding what I might have missed? Upgraded iOS just last week and system appeared normal.

Hi CurticeFarm,
If you are having issues with your external display shortly after moving your Mac Pro to a different location, you may find the troubleshooting steps outlined in the following article helpful:
Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
Regards,
- Brenden

HT2810 Apple HD Cinema Display will not come back on after brief power cut.

My Apple HD cinema display won't come back after a brief power cut.
There is the little white power light on the front which pulses on three times and then extinguishes, repeatedly.
The Mac itself seems to power up although it's hard to tell if it's bboting properly, as I cannot see anything on the screen.
There is power going to both units so I have no idea what is happening.

This sounds like a very common problem. If the blinks are one short, one longer, one short..... long pause... repeat.... start searching this forum. There are also Youtube videos on solving it. If this is the problem, the solution is easy. You block both center pins on the 10 pin power connector. Its crazy but it works.
https://discussions.apple.com/thread/2086442?start=30&tstart=0
http://www.youtube.com/watch?v=vodDfic8omA
I just used a very thin strip of paper folded in half and slipped into the display's connector so it covers ONLY the two center contacts, then slip it into the power module very carefully. Make sure there is some slack in the paper as otherwise it will tear and the contact will still be made. If it doesn't work at first, try again as the paper made have torn in process. It would be better to use something stonger like a very thin strip of mylar. Or you can do what the video shows, but I didn't try that exactly.

My lock screen just shows a black background and a User Name/Password dialog after opening the screen from sleep. How do I get it back to where it blurs my desktop image with the dialog and my account image displayed?

I'm not sure when it began, but now my Macbook Air only shows a black background and a User Name and Password dialog box when I wake it from sleep. It used to show my desktop background blurred with my user name and icon displayed with only a text field for entering my password. I'm currently using Yosemite (OS X 10.10.1) and all updates have been done. Any help or suggestions would be greatly appreciated as I know this isn't a real problem, just an annoyance since I couldn't find how to change it back in the System Preferences.

I just have to point out that after looking at a related post (https://discussions.apple.com/message/22661092#22661092), it brought to memory that my issue most certainly began happening after I added some DoD certificates to the keychain. This obviously has something to do with it, but it still leaves me wondering what actually causes this to happen. :/

Problems connecting to Monitor after waking up MacBook from sleep

Hi,
I am experiencing a lot of problems connecting my macbook pro to external monitor once I put it to sleep. I have tried every options like setting up PRAM and all, but it just wont work. Sometimes the restart works and sometimes it wont. I am using a Samsung monitor. I have no idea what to do, as I keep on clicking Detect displays and it just wont do anything. Can anybody please help me as to how I can wake up my macbook from sleep and get it connected to the monitor. I have a mac keyboard and bluetooth mouse, but neither would wake the mac. I have change my bluetooth settings so that the mouse should be able to wake it up..

William Rivas wrote:
William Rivas wrote:
William Rivas wrote:
Linc Davis wrote:
Test after taking each of the following steps that you haven't already tried. Back up all data before making any changes.
1. Make sure the network is on the preferred list by following these instructions. It's important to read the article carefully, as it's the starting point for any further efforts to solve the problem. If you skip any of the steps, the problem may not be solved. Make sure the box marked
Remember networks this computer has joined
is checked.
2. Follow the instructions in this support article under the heading "Symptom: The network connection drops unexpectedly."
3. Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.
4. From the Location menu at the top of the Network preference pane, select Edit Locations. A sheet will drop down. Click the plus-sign button to create a new location. Give it any name you want. In the new location, set up the Wi-Fi service with the same settings you used before. Click Apply and test.
5. Launch the Keychain Access application. Search for and delete all AirPort network password items that refer to the network. Make a note of the password first.
6. Repair permissions on the startup volume.
7. Turn off Bluetooth and test.
8. Reset the System Management Controller.
9. Reset the PRAM.
10. Reinstall OS X.
Updating to 10.9.2 did the trick. So I thought. Does anyone have a solution?
Thanks!

Problem with starting Photoshop CS6 in Windows 8.1 after PC weak up from sleep

Hello,
I have continuously problems with Photoshop CS6. After weak up my PC from sleep mode Photoshop take ages to start. It take about 15 minutes than it starts. After restart it's just fine and Photoshop start up in few seconds. Before with Windows 8 was everything ok.
I tried reinstall whole Creative Suite, delete all files from system folders of Photoshop, no plugin used, all is up to date!
CS used: Creative Suite Design Standard CS6, Czech language (Photoshop 13.01 64 bit and 32 bit - both do the same)
System: PC, Windows 8.1 64bit Czech language, system and program discs: Intel and Corsair SSD, CPU Intel i7 4Ghz, 24GB RAM, Graphic - Nvidia Geforce 580 GTX (graphic drivers up to date).
Adobe need to fix that.
Thanks for help, it's really annoying problem.

Martycz wrote:
Adobe need to fix that.
Along with all the other problems in this world that are all Adobe's fault.
OK so this all went pear shaped after updating Windows to 8.1? Have a look at Preferences > Performance and see if Graphics acceleration is still checked. Or it might even be greyed out. Apparently the 8.1 installer arbitarily installs a generic graphics card driver, so you might find that your drive is not so up to date as it used to be.
You know that you need to update it from the card maker's site?

MacBook pro retina display is not turning on even though the computer is on.

My Mac book pro retina display has a solid black screen. I can hold the power button down to turn it on and off, but the screen never activates.

   Restart.
   Press F2 key couple of times.
   Reset PRAM.   http://support.apple.com/kb/PH18761
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".
Best.

My macbook pro is just over 3 years old now and off and on during this time the screen will just go all black. Lately this blackout is lasting longer and I was wondering what is causing this. I am afraid that this will not come back on in the future.

My MacBook pro is just over 3 years old now and the screen has totally blacked out for a few seconds at a time. It will come back on in a few seconds with the exception this past month it has stayed black for a longer period of time like one minute. It scares me to think that one of these times it won't come back on. I have noticed it happens more often when I am using just the battery power. Does anyone have any idea what causes this? just to mention my battery was not low when this happens.
Message was edited by: jmckl

jmckl,
if your MacBook Pro is a 15-inch Mid 2010 model (“MacBookPro6,2”), then it might be exhibiting the defect that is documented on this Apple Support page. If your black screen is due to this defect, then that page states that Apple will service this problem on this specific model of MacBook Pro gratis, for three years from the date of purchase. However, some commenters here have noted that sometimes the servicing is done gratis without having proof of the date of purchase. If you have an Apple Store near you, you might consider bringing your MacBook Pro there to have them check for the presence of this defect.
It is only the 15-inch Mid 2010 model that has this problem; no other model suffers from it.

What might my problem be if my display will not come on after waking the computer from sleep or powering it on?

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