MacBook Pro :: Sound Card Not Working / Screen Goes Blank?
Apr 3, 2008
First of all, I have a Unibody MBP 2.4 GHz from October 2008. Today my sound card died. Or half died. My left speaker doesn't work anymore, and the sound card must have fried my headphones too, because the right speaker in those also doesn't work anymore (with any ipod / computer).
But this is only one of the many problems I've had with my logic board. I've had my logic board replaced twice for graphical issues, and now I'm experiencing even more issues. Every once in a while, the top 1/4 of my screen flickers black for a couple milliseconds. This happens on only the 9400. But, when I'm playing games using the 9600, it will overheat and my screen will go black and the sound will start looping. To fix this, I have to manually adjust the fan speed before I start playing. And finally, I've had some USB problems too. Whenever I plug in a USB device into my computer, it doesn't get recognized, get powered on. NOTHING happens. I have to wiggle it around for a couple minutes to find the "sweet spot" where it will connect.
All of my problems have been with the logic board.I'm going into the apple store tomorrow. I'm pissed. I shouldn't need to get my logic board replaced every couple months.
Any suggestions? Should I ask for a new MBP all together? Should I just keep putting up with this BS? Anybody have any permanent solutions to any of the problems I've mentioned?
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Dec 12, 2014
When I power on, my macbook pro does nothing (blank screen) after the sound.Â
System:
-Macbook Pro Retina 13' (Mid 2014) 256GB SSD, i5, 8Gig RAM
-Yosemite (10.10)Â
I tried to install Windows 8.1 using bootcamp assistant on Yosemite. After installing Windows 8.1, it asked me to restart.
When I restarted it stuck on blank screen. I've heard the startup noise but nothing happened. I tried many startup key combinations such as; Command(Alt), cmd+R,cmd+V,T, but the screen is always blank. Although the screen light is, on the screen is totally blank.
I did resetting SMC, and also I did cmd+alt+P+R (I've heard 4 times startup sound) but the screen is always blank. Nothing happens. I can only shut down by pressing the power button for 4 seconds. As a result when I power on, I hear the sound but nothing happens. Nothing on the screen.   Â
What I did before was: The system is a brand new mac. I bought it 1 week ago.
1- I tried to install windows 8.1 using bootcamp. But failed. Because windows installer gave me an error that windows can not be installed on GPT partition.(I have also MacBook Air and MacMini with bootcamp Windows 8.1 working fine.)
2- Then I rebooted using Alt key then booted to MacOSX and deleted the windows part and many combinations. But failed. The error was always the same GPT error.
3- I reinstalled Yosemite tried all the steps but failed with the same error (GPT error)
4- We had another same macbook pro. And we could install windows 8.1 easily.
5- I compared the two machines in windows setup. The problematic mac had first partition labelled EFI.
6- Then after a few hours. I tried to install again. And saw that the EFI label was gone!. But I don't know how this is happened.
7- I was happy and started to install windows. After installing the system gone!!.
Info:
MacBook Pro with Retina display, OS X Yosemite (10.10), 13' 256GB SSD 8GB RAM i5 (Mid 2014)
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Aug 23, 2006
I've got an 800Mhz iBook G4 (640MB RAM, latest update for Tiger 10.4) which has worked without a hitch for the last 2 years. Suddenly it has started going dead while in use - the screen goes completely blank (although the backlights are still on) and all sounds cease. It doesn't matter if the machine is idle, or playing World of Warcraft, or encoding a DVD in DVD Studio Pro. It is completely random. The only way to get out of it is to hold down the power button to force it to shut down. Powering up is also becoming difficult - 9 times out of 10 the machine boots but I get no startup sound. Instead the screen stays dark and the fan goes on full throttle, and nothing happens. Sometimes I can force it to shut down by holding down the power button, sometimes I need to take the battery out. When the machine does boot and I get back into OS X, sometimes it displays a message saying my clock and time/date are set before 2001 and I may have problems.
I understand this message comes up if you reset the power management unit, but on checking the time/date it is set correct. I have tried resetting the power management unit, but it doesn't make any difference. I have run the hardware test CD, and all items pass on the extended test. The iBook's battery is almost dead - this I know! But would that make any difference? With the time/date error that sometimes comes up on restart, it's almost like the internal battery that stores data like the time has run flat. Is this charged by the big battery? I haven't booted into open firmware, but I've read I can run the reset -nvram and reset-all commands from there (not sure what they do). It's not hardware, as the hardware test CD works. It doesn't seem to be a software error (although I haven't reinstalled OS X). Has my RAM gone bad or become unseated?
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Oct 28, 2009
I have a MacBook Pro 13 for portability to my classes at the university and a Dell 2209WA as an external monitor. One of the few good IPS monitors I could find around for cheap.
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The monitor works great with a Mac Mini I have and it works great in mirror but not in external display mode(the lid of the MacBook Pro closed). Anybody know of this issue? The cable is good and the MacBook Pro is not that old(a few weeks).
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Aug 2, 2009
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Dec 5, 2009
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I need a definite answer
Or if anyone can recommend another one that I didnt mention.
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Dec 21, 2010
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Jan 1, 2011
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In the space of a few minutes, they both completely died. I've tried resetting SMC, PRAM, everything I've found on Apple's support page and forums like this. Nothing has worked. The light on the power cable glows orange when plugged in, so it is still charging, and the battery indicator lights on the side of the MBP work fine. Aside from that, they are both completely lifeless...........
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Jul 2, 2009
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Wirelessly posted (Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/533.18.1 (KHTML, like Gecko) Version/5.0.2 Safari/533.18.5)
Any solution when New Macbook Air 13" goes Blank (white)?
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