LCD display not working (blank screen)

One day old 15" G4 (the latest model). No major changes to configuration; only basic software installed (Adium, Messenger, Firefox, Remote Desktop).
The LCD display stopped working during normal operation (web browsing) and I assumed it was a power management issue (I was running on a low battery). I unplugged all devices, plugged it in and rebooted (per instruction manual); same issue.
Since then, I've zapped the PRAM, booted with "R", reset the NVRAM, and reset the PMU. I also tried loading the setup CD with the "Option" to get the hardware check; this may have given me helpful data but I can't see the display so I'm not sure (read: display doesn't work even when booting from CD).
External monitors work fine still. The Mac boots and everything loads perfectly. I can adjust the screen brightness on the LCD using the F1 and F2 keys; the display responds by varying the backlight but it is not rending the GUI; it remains black (or dark gray, really).
I'm experienced with computers but this is my first time working on a Mac, so I'm completely unfamiliar with how to troubleshoot these things. Any help you can provide is greatly appreciated.

Hi
This is exactly what has happend to my PowerBook a few days ago. Its only just out of warranty too. Man I wish I bought Apple care!!!!!!
PLEASE, PLEASE, PLEASE, could you tell me what it was? Was it the inverter? I'm miles away from an Apple store (yes I know I live in the UK and its a small island, but its still miles) and woulf like to try and resolve it myself.
Works fine on an external LCD. Tried everything!
May get my screwdriver out.
Powerbook G4 1.5 Mac OS X (10.4.3)

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Hi
This is exactly what has happend to my PowerBook a few days ago. Its only just out of warranty too. Man I wish I bought Apple care!!!!!!
PLEASE, PLEASE, PLEASE, could you tell me what it was? Was it the inverter? I'm miles away from an Apple store (yes I know I live in the UK and its a small island, but its still miles) and woulf like to try and resolve it myself.
Works fine on an external LCD. Tried everything!
May get my screwdriver out.
Powerbook G4 1.5 Mac OS X (10.4.3)

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I have a T60, the bottum 1/3 of the screen suddenly is not displaying anything. There are funky lines across the width of the screen but only come up about a third. I haven't been able to find anything else wrong. The screen is fine when in a docking station or projected. Only the laptop's screen seems affected.

bags4440, welcome to the forum,
hopefully you have warranty, what you describe says to me that you have a defective display. Sorry
Andy ______________________________________
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Macbook Display Not Working (Black screen)

I have a Macbook 13.3" and I recently sent my screen in to get fixed after I dropped it. The hardware is fine, but I tried to turn on the computer and everything's working fine, but the screen won't turn on.
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I just got the new iphone 4. Facetime will not run on it. OS is updated, phone is not jailbroken. Every time I try to make a call via facetime, I can see myself in the little box in the corner, but there is no picture on the rest of the screen. It's blank. On the other side of the call, my friends can see one frozen frame of me but no video or audio. After 30 seconds the phone says 'call failed.' The worst part is that every time I try to make a call to someone, facetime freezes my internet. I've never had internet problems before, but now, if I try to put a call through facetime, I lose all internet signal and have to reset the router to get internet back on in the house. Any ideas? Or should I simply take the phone back?

Click on the link provided by stedman1 and follow the troubleshooting steps there.
You can also try to Reset Network Settings: Settings>General>Reset>Reset Network Settings
You can also try resetting your device (nothing will be lost): Hold down the Home and Power buttons at the same time and continue to hold them down until the Apple appears. Once the Home screen redisplays, make sure your Wifi is on, and try again.
Cheers,
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I have a slight crack in my mac book pro screen it is just on the top of the screen and the LCD display is working fine. i was wondering how much it would cost to fix it/ replace it.

i have a slight crack in my mac book pro screen it is just on the top of the screen and the LCD display is working fine. i was wondering how much it would cost to fix it/ replace it. it is not a pressing matter but if it is cheep to fix then i would like to do so

Most of us wouldn't know that here. Call your Apple Store.

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I'm running Thunderbird 31.6.0 on Windows 8.1 with BitDefender 2013.
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When getting email, Thunderbird freezes and displays "Not Responding" in screen header.
When TB is closed then reopened, a popstate folder (popstate-1.dat) is added to account. A new popstate folder appears with each crash/freeze, and as long as they are not deleted, they pile up with unique numbers (popstate-1.dat, popstate-2.dat, etc.).
(see attached screenshot)
NOTE: I've included troubleshooting details below for all the fixes I tried, thinking it might be helpful to anyone who has a similar problem and is thinking about going down those paths. Ultimately, it seems that FIX ATTEMPT 5 is the winner.
==================================
FIX ATTEMPT 1:
Following the suggestion in this archived mozilla support post: https://support.mozilla.org/en-US/questions/1026288, I restarted Thunderbird in Safe Mode (Help > Restart with Add-Ons disabled...), checking the "Disable all add-ons" and "Reset toolbars and controls" and clicking "Make Changes and Restart" button.
In Add-Ons Manager, BitDefender Toolbar now appears to be disabled.
(see attached screenshot)
But the problem persists.
FIX ATTEMPT 2:
Following the suggestion in this archived mozilla support post: https://support.mozilla.org/en-US/questions/1016811, I clicked Help > Troubleshooting Information > Show Folder button. This opens a File Explorer window for 3I58b9dq.default (this is the "profile" folder) which contains panacea.dat and folderTree.json files.
I changed file names to panacea-changed.dat and folderTree-changed.json (rather than deleting them, in case I need to restore them), and I reopened Thunderbird.
This did not solve the problem -- and, furthermore, the profile folder seems to have automatically generated new panacea.dat and folderTree.json files to replace those for which I changed the filenames.
FIX ATTEMPT 3:
Following the suggestion in this mozilla support post: https://support.mozilla.org/en-US/questions/1044774, I restarted Windows 8.1 in safe mode with networking enabled (using these instructions: http://www.howtogeek.com/107511/how-to-boot-into-safe-mode-on-windows-8-the-easy-way/.)
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QUESTION 1: I understand that troubleshooting is supposedly done best in safe mode — What might I do in safe mode to diagnose the Thunderbird problem?
FIX ATTEMPT 4:
This article https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#Symptoms, suggests that problems with Thunderbird associated with BitDefender can be solved by uninstalling and re-installing BitDefender.
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QUESTION 2: Would uninstalling BitDefender be any different than disabling it?
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THIS FIX DID THE TRICK! YAY!

FIX ATTEMPT #5 above did the trick, and now I see that it was the chosen solution for a similar post of the same problem at https://support.mozilla.org/en-US/questions/1044774

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I will propose you something close to one thing done but slightly different and tried (and worked) many times and with many different laptops having the same issue as yours. You need to Reset any possible electrostatic Charge.
take off the battery and the power cable (this means no contact to any current)
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...Information Technology is simple logic...
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In Options --> General --> I want the option to "Show my windows and tabs from last time" '''''AND''''' "Show my homepage", but that choice isn't given. When I open a new tab, I'd like to see my iGoogle page, not a blank screen. Hope you can help. D

You can middle-click or Ctrl left-click the Home button on the Navigation toolbar to open the Home page in a new tab.
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I’m surprised to see that BT are taking so long to trace a fault in their system last raised 5/8/2014 (VOL012-**********) and that they haven’t sent an engineer to the property or to the exchange to check the problem.
My patience is wearing thin over this problem with my Caller Display not working as it started in mid June. I’m also becoming less enthusiastic about BT and find it harder to recommend them to others.
My last message from BT, tells me that it should be back to normal on the 8 August. However, it is still not working. Their message that my phone should be back to normal now and if it isn’t report this to BT, is ridiculous. If an engineer had investigated what was causing the fault and found it, then he would have fixed it. However, either an engineer has not investigated the fault or BT is not competent in fixing their own service faults and makes these statements with crossed fingers?

An engineer called yesterday and told me that he had been asked to test the line for a voice fault not a Caller Display fault. However, his testing revealed there is no line fault, CLI signal is strong and he was happy that the new BT2000 phone (bought after the lightning strike) is working properly. (This phone had also been tested on a neighbour’s phone line where it displayed the callers number). He also found that this same BT2000 phone on my line was not displaying the Caller’s number (CLI), but couldn’t offer any reason why.
I conjectured with him that these tests must bring the problem down to a corrupted CLI signal which does not allow the phone to understand the phone number being sent.
When the lightning struck the phone line back in June, it blew the telephone connection in the back of the Sky Box with a flash and bang (telephone cable now removed from the Sky box). It shorted the Openreach Faceplate (now replaced) so that the phones and broadband stopped working and it caused the phone to light up and react as it does when a call comes through.
Now isn’t it possible that the lightning also travelled along the copper wire to the green cabinet just outside the house and damaged something there which is corrupting the CLI signal, but which does not not show up when the voice line is tested? If not, then there must be a problem further back in the infrastructure, possibly in the Exchange, that is causing a corrupted signal to be sent to my phone?
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Display not working

Hi,
I am using Lenovo G510 Laptop. First I was getting an error of bad signature file which was stopping windows from loading.
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Regards

Dear sir,
I gave my laptop to an HP authorized service centre in Ernakulum (Vertex techno solutions Bangalore Pvt ltd, Ernakulum) No: 2550, on 04/12/2014 . Same time i registered my laptop complaint in hp customer support. http://h30434.www3.hp.com/t5/Notebook-Hardware/display-not-working/td-p/4760312, informed me that no complaint to MB and GPU . But service centre informed that complaint in motherboard and asked me to change. When I talk them about the your mail and the details that you provided they suddenly respond they can't repair the laptop at their service center, disconnected the phone. I feel very much disappoint about your authorized customer services. In the mean time I kindly request you to take immediate actions regarding these kind of activities also provide a solution to repair my lap top
Shyju S
Research Fellow

LCD display not working (blank screen)

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