It hasn't been dropped, has it? Any idea where to start with trying to correct this problem? If I close and reopen the lid, the screenlight comes back on for a fraction of a second, then goes black. Duplicate installation disks can be obtained from Apple Customer Service. I replaced the inverter and the inverter cable and nothing changed. From the power panel, look down until you find the cycle count and condition for your battery. After an hour or so, I hear the boot sound come from the laptop.
The issue will not occur with a stress test done by some computer. It may happen that your Mac became unresponsive and asks you to reset password. Even considering the worst hardware failures on the logic boards, this often isn't true. I wonder, what causes this behavior? It is as if someone is remotely toying with me. With a torch, I can see the apple logo on screen and the rotating 'busy' symbol. There are some known bugs that could be causing the issue, however, so this is a valid possible cause. After researching, I replaced the inverter board and the inverter cable.
I can hear the chime though; I'm not sure if that means anything. Blackout happened again, this time brightness key did nothing. I end up having to shut it down and then restart it every time. I think it is a short in the screen but I am not sure. You seem to have had a few false starts before you got to that left hinge. Make sure to check official Apple channels such as or Apple Community Forum to find out if this is your case. When I press one of the control buttons it indicates that it is 3 or 4 steps higher or lower obviously allowing for the fact that pressing a control button moves you one step anyway! I've read a few things don't remember where where Yosemite reveals a hardware issue that mavericks or something earlier didn't have a problem with.
When I turned it on again - and everything was okay - I thought it might have been the battery but yeah, it doesn't explain why the fan was still running. After I installed lion, I notice that this started to happen. A bit of boot splash would show up, but the gray background would at some point just hang. But, my 1 year coverage is already over so hope that doesn't eliminate me from getting that nvidia service in the case that it is the gfx card hardware problem? The only solution at the moment is to press the turn off button for a few seconds then switch the laptop on again. The black screen some MacBook Pro users may experience is hardly a death sentence, but it is fairly annoying and ruins whatever activities you were previously engaged in. When I power on, I can hear it booting and the green light comes on, however the screen is completely black and no keystrokes will change that. Although it may seem like your computer has turned on via the activity indicator, fans, or noises , the screen remains blank.
I haven't tried the monitor aspect as I don't have one handy. Is there any cheaper solution to it? The only way I could tell it was on was to look at the Apple icon on back of the monitor, it was lit up. The procedure is a bit tricky but doable. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. When it goes black, I can use the F1 and F2 keys but have to keep it on a very low setting—and sometimes it won't work for long. Can you see whats on the screen if you shine a flashlight on it when powered on? Info: MacBook Air Jul 8, 2008 I've noticed recently that my screen brightness will suddenly increase or decrease by itself. I can't really figure out a pattern as to when it does it.
Will this go away on it's own? If this happens to you, try the following as a way to save your work before restarting. In my case, the MacBook Pro was returned to a Apple Dealer and repaired under warranty, because Apple apparently has acknowledged the problems with the video card on these machines. But i came to know that its because of the memory related issues that i had in my mac. Not wanting to interrupt his work flow, Joe attached an external monitor to the system, and despite the black video output on the main display, normal video output appeared on the external monitor. I had this happen to me after one week of the refresh last February. Disclaimer: If you are reading this, chances are there is a hardware problem with your Mac.
Wait 15 seconds and press it once again to reboot. Unlike remove junk in Windows, most users do not know how to clean system junk or other junk in Mac. I am not sure if it has anything to do with my screen, however, the screen is randomly turning gray and white with lines and fading out. I've given it the once over and I'm not entirely convinced it's the logic board, although my mac hardware knowledge is fairly limited. A careful inspection of the wiring to the screen after vacuuming an accumulation of dust debris from the circuit boards revealed no obvious defects. Machine starts but screen stayed black. I don't have install disks as I bought the computer used and it only came with the power cord.
Hence, if you have a MacBook or any Mac for that matter that is showing no video output on one display source, especially a built-in display as on a laptop or the iMac, then try using a secondary video output, if possible, before resorting to rebooting the system. I was hoping someone else has had a similar problem and figured out how to fix it. It has started to have a mild flickering just before going out. As to your problem: Not sure why the Apple Store tech implied it was the logic board given your symptoms. Could it be your cat stepping on keys? Use this guide to get your Mac up and running again and create a full backup of you system as soon as possible.
All postings and use of the content on this site are subject to the. Oct 19, 2009 Last night I was using my computer all fine. Usually it comes back on slowly and is fine. Jan 19, 2009 lately, my mba has been behaving a little weirdly. Even though it was an authorized Apple repair shop make sure it follows the Apple protection plan and also records the repair work done where apple genius can access it. Copyright © 2019 iMobie Inc. Go to your battery on the top right and click it then click on energy saver preferences on the bottom and put it to what you want.
It happened to me so I took it to Apple, they ran some diagnostic application on it and basically gave me a new, updated model. I just had the hard drive replaced in February so I hope it's not that. Screen never changes from black screen. Because it was less then 30 days of purchase, he told me to call Apple care and request a new replacement He put this recommendation on the report. Under the left hinge step 34 , a piece of foam rubber banded in fine metal mesh was discovered compressed between the hinge mount and insulated wiring to the screen. I do like it a lot, but I have one big problem its big to me! I pressed right and enter as I knew the pen drive comes up on the right. Does anyone know what my issue may be? Since I had no sound I waited until I saw the apple light up, then I tried that sequence of keys.