Screen went black and won't wake up

While using my Powerbook G4, the screen went black. I can see that the power's still on- the light on the screen release button is illuminated. But I have no display and cannot wake it up from sleep. Please help!

Try press+hold the power button and see if it shuts completely off, then try booting normally. If that doesn't work, you may have to remove all power (adapter+battery) to kill it, then try restarting normally.

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My iPhone screen went black and won't turn back on.

Yesterday, my iPhone 4S screen went black and won't turn back on. So I tried just letting charge but after an hour nothing happened, so then I switched out the chargers and made sure the outlet I was using worked. But it still was black. Then I did a little research and I tried to put it into DFU mode but my power button has been broken for a few months now, so that didn;t work either. Then I tried restoring it, but my computer didn't recognize it!!! So then over night I let it rest with no power source connected to it. This morning I plugged it back into a power source and it showed the charging icon. I'm pretty that means it's still running, but I'm not an expert. PLEASE HELP!

If you have got a different USB Sync cable try to charge your iPhone with that as there are possibilities that your current USB cable or Power Adapter is not Charging your iPhone. If it still doesn't work make an appointment to Nearest Apple Genius Bar

My screen went black and won't start up

My screen went black and I can't use computer.

See this Apple note for help with a system that won't start up.

My iphone 4 screen went black and won't turn on

My iphone 4 today mysteriously won't turn on, I tried charging it and it won't even charge. I was using it a few hours before hand it was fine with 100% battery and I haven't put it in any water so I am confused as to why this has happened. Can someone please tell me what to do and why has this happened?

I had the same for the second time today... no way to turn it on !! it was 63% loaded and on my desktop without activity (on the iphone ;- ).
tha only way to turn it on is to unscrew the two scren at the bottom, remove the back cover then unscrew a screw on the bottom left, close to the black battery, then you unplug the plug, wait a few second, plug it agin and screw.
Then turn it on ! it works twice ... then your iphone will first set as 1st of january ... but later recover everything date, time ... then i had a prompt with "imap.gmail.com" not recognised (written in french, i am french !), then i had a "dataaccessd" screen asking to accept the Equifax Secure Certificate Authority as non thrusted ... don't know what it is but asnwer YES and ACCEPT then iphone is fully operational ... until next crash !
Fred

My macbook pro screen went black and won't display back to the normal screen. When I turn it on I can hear the computer starting up and the keyboard light turn on but the screen stays black. What can I do? Help please!

Please help! I can't get my screen to turn back on. It just stays black when I turn it on. Is there anything I can do to reboot it or am I just out of luck
Thanks!

Did you buy the Applecare extended warranty? If not then you will need to pay for whatever repairs need to be done.
You will need to take the system to an Apple store Genius Bar for a check up.

My MBPro screen stays black and won't wake from sleep

I updated from Lion to Mountain Lion and everything was fine. Came back (with clamshell open) and the computer was asleep.
Haven't been able to wake it since! I need this for work! Even when I do a hard restart - nothing. I tried resetting PRAM and SMC and still no luck.
I"m seeing others have this problem, but not finding solutions. It has been around a while (based on postings) and I just upgraded to the latest system 10.8.3 - apple missed this? Anybody have any ideas? I'd rather not drive the two hours to pay to have my computer fixed because I paid to upgrade it with their software ....

When you drop your iPhone or when it overheats, the battery gets completely drained. All you have to do is charge your phone overnight (I suggest this as it will take much longer to charge then usual). It should be completely fine by morning

IPhone screen went black and won't turn back on and everything else is working besides that.....HELP!!!!

The description says it all.....my lock button on the top is broken (iPhone 4).....not sure what to do.....any ideas?

Take it in for repair.
Genius reservation http://www.apple.com/retail/geniusbar/

My iphone 5 screen went black and the only thing that works is siri!

I was in the middle of opening up pintrest when my phone screen went black and won't turn back on. The only thing that works is siri... My lock button also doesn't work so I can't manually restart my phone. When I try to restore my phone i have to turn off find my phone but i cant because the screen is black.. Please please please help! I'm a poor college student who cannot afford a new phone

Well, you can't perform a reset then. What happens when you plug the phone into a power source? If nothing, then you'll have to make an appointment at any Apple store. The genius bar will offer you an out of warranty replacement. Cost is US $269.

HT4623 I installed ios7 on my iPad 2 yesterday, this morning it wouldn't open the weather channel app. I thought maybe I should power it down. When I held down on the power button the screen went black and now it won't do anything. What do I do now?

I installed ios7 on my iPad 2 yesterday, this morning it wouldn't open the weather channel app. I thought maybe I should power it down. When I held down on the power button the screen went black and now it won't do anything. What do I do now?

Try a reset: Press and hold both Sleep/Wake and Home buttons until the Apple logo appears.

I was updating my iPhone 5S, suddenly the screen went black and now it won't turn on. Plugged it into my computer and it said "USB Device not recognized..." HELP!!

I just went to update my iPhone 5S as it asked me to, and it got to the point with the apple logo on the screen and the black loading bar underneath, but then the screen went black and the phone now won't turn on? I went to plug it into my computer and it said "USB Device not recognised"..
PLEASE HELP ME! It's 1am here in england, I need to be up at 6am for work and won't be able to get up without an alarm... my only option is so stay awake!

Nothing happened, i managed to get my computer to recognise it and now restoring... but it says 3 hours remaining?! Will i lose everything?

Won't turn on - initially saw the connect to itunes screen then went black and won't do anything

Charged IPad all morning - saw the screen that says to connect to ITunes - Once it reached full charge, screen went black and nothing works -

I have tried every reset tip on-line - Hold home and power for 10 secs, 15 secs, alternate, etc. Any other suggestions?

HT1414 my ipad mini screen went black and I cannot power it up. nothing happens

I have an ipad mini and I bought he keyboard for it, I synced the keyboard and the ipad screen went black and now I cannot get the ipad to power up at all

Try reset iPad
Hold down the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears
Note: Data will not be affected.

HT4061 my iphone 5c screen went black and now I cannot see the screen. I click on the button I hear siri but nothingon the screen.

I was downloading a Bosesoundtouch update on my iphone. Screen went black and now I cannot see anything.
Any suggestions?

try a hard reset, hold the sleep.wake button and the home button down at the same time until the apple logo appears, it generally fixes this issue

We just moved from the United States to Costa Rica. The first two days my mac worked great. Then all of a sudden I was trying to use a game application and the screen went black and there is a white cursor which I can move around, but I can't escape it

We just moved from the United States to Costa Rica. The first two days my mac worked great. Then all of a sudden I was trying to use a game application and the screen went black and there is a white cursor which I can move around, but I can't escape it. When I restart it seems okay and I see my main screen, but only for a second and then it goes black again.
This computer was brand new in June. Is it the humidity??? What can I do. Please help!!!!

No guarantess but try smc and pram resets,

I have an iMac running Lion and W7 with boot camp . It has been operating flawlessly until I went to reboot into Mac tonight. Screen went black, and system is unresponsive. I've tried force quitting and turning power off. Hard drive starts but that's it..

I have a 5 month old iMac running Lion and W7 with the latest version of boot camp . It has been operating flawlessly until I went to reboot into Mac tonight. Screen went black, and system is unresponsive. I've tried force quitting and turning power off. Hard drive starts, there's a small amount of drive activity and that's it.

Hi Jane, your info may still be there, look in the Users folder at root of the drive, how many users are there there?
It sounds like this may have happened...
Return to default desktop, apparent "loss" of home directory, (it can happen spontaneously too)...
http://docs.info.apple.com/article.html?artnum=107854

Screen went black and won't wake up

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