One question, it seems to be a problem with display brightness as i read this discussion, but in my case the is one more symptom, there is no typical sound for booting OSX, i just hear something from inside as usual, but no sound of OSX booting. That makes me think that it is not an display issue, what is your opinion?
Doing this solved the problem for me:
- 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.
After resetting NVRAM or PRAM, you may need to reconfigure your settings for speaker volume, screen resolution, startup disk selection, and time zone information. If issues persist, your Mac's logic board battery (not a portable Mac's rechargeable battery) may need to be replaced. The logic board battery helps retain NVRAM/PRAM settings when your computer is shut down. You can take your Mac to a Mac Genius or Apple Authorized Service Provider to replace the battery on the logic board.
Hope it helps!
Long time lurker, first time poster, I have a Macbook Pro from 2009 and this morning my mac started then then the screen went blank. I tried restarting as well as what several other posters said to do. Nothing worked. So I inserted the Mac OSX Install DVD that came with the machine and started from scratch again. Not recommended if you haven't backed up in a while as you will loose everything. Also, it is taking me forever to upgrade back to the most recent OS (Mav). But several hours for free seemed better than a few weeks for a chunk of change.
Hi, after being told by the repair man that I needed a new screen (when I know it is only the convertor cable) I eventually just went out and bought a new MacBook Air.
I have decided to give the old MacBook to a girl I know, she wants a media server , something similar to the set up I have with a Mac Mini under my TV. I will use the MacBook to do this for her, running it in clamshell mode connected to her TV and using it for Netflix and Plex, this should not overly tax the MacBook and as long as it is well ventilated it should last her a good few years until she is able to buy herself a Mini.
Just today a friend of mine had the same problem with his MacBook Pro (Mid 2007) and Mavericks 10.9.2. According to his words the only thing he changed over last couple of days was to update to the latest "Adobe Flash Player" version. So we booted his MacBook in target mode and used the Mavericks installation as start volume for a Mac Pro (Early 2008). Then we deinstalled "Adobe Flash Player" with the official uninstaller, restarted his MacBook and voila the black screen disappeared. Just as a side note, all previous attempts to reset the PRAM and SMC were of no avail. Good luck!
Hi, just want to share my problems here as well.
I own a late 2007 A1181 macbook, black. I changed the display on it a year ago by myself. Worked fine until a week ago. I was hooked up to the TV (55") on DVI>HDMI cable and had the 13" screen wokring as well.
Smoke started pooring out of the left lower corner of the display OR the left uppercorner of the "base part". I got scared and pulled the plug and shutdown the machine. After a few minutes I tried to to turn on the computer again and the normal "apple" sound went off but the display was black (but the DVI>HDMI cable worked fine and the display apperead on my TV). I looked at the screen, in fact it was working, there was just no backlight.
My question to this forum; is this a typical inverter issue ? It did not warn in advance at all, some say it flickers before it dies.
Has anyone seen smoke in these cases ?
I've had this happen twice. The solution for me was to remove the bottom cover, disconnect the battery from the motherboard. Wait 30 minutes, reconnect and power up. I'm not certain as to why the wait. This last time, it still didn't light up the screen until after an hour, as though there is a timer that waits one hour to reset the system. I learned of this work-around from another troubleshooting site, so it's not something I figured out, but it is something that works and I am not seeing others post the part about waiting. That last part is very important. It's also a bit gut-wrenching.
1. Normal screen during power on, shortly after Apple logo, screen would get very faint, no backlight.
2. External monitor worked fine.
3. With battery removed, laptop screen and external monitor worked normally.
4. In "Firewire Target" mode, laptop screen worked normally, with or without the battery in.
With battery removed, I found that all the screws holding the laptop battery connector in place were loose, tightened all, replaced the battery and the laptop has worked normally every since.
It seems that over time, this screws can work loose, please check all the screws in the battery compartment.
Hope this helps others. . . .
My friend has the same problem and I fixed it. The steps are very simple.
- The first step is probably the easiest. Turn off your Macbook if it isn't already off
- Turn it back on by pressing the power button like normal
- After 2 minutes get a flashlight.The flashlight app on ios 7+ will do.
- Bring the flashlight and the MacBook into a well shaded area.
- Shine the flashlight close to the screen,a few inches away.Bring it to the center of the screen.
- You should now see the users on the login screen.
- Click on your user and type in the password.
- Wait 3 minutes
- Your macbook should now be on with full brightness or the brightness your macbook was last on.
- HAVE FUN ON YOUR FIXED MACBOOK!
-Your apple dev,Nick