HT1338 MacBook pro will not detect internal speakers.

This issue seems to have cropped up after hooking up to a Jambox voia blue tooth. I have "stopped using headset" as audio device. The volume control on my keyboard a has that locked icon disallowing me from adjusting volume. How do I go about reinstating my internal speakers as they do not show up in system preferences dialougue box for sound?

I HAVE SOLVED THE PROBLEM: USED MY HEADPHONE JACK AND IT SEEMS TO HAVE DISLODGED SOME GUNK IN THE PORT.

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MacBook Pro will not detect external speakers, even though it did yesterday

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Have read a lot of web comments, most not very usefull.

Hi a,
Check the setting in Sys Prefs > Displays.
Try a different adapter and/or cable.

MacBook Pro will not detect displays. . .

I found this link, and it best discribes what is happening on my macbook. I have a thunderbolt to cdmi cord that I use on my TV. Then all of a sudden, it just stopped working. . . My screen flashes black for about a second like its about to connect to my TV, but then nothing happens. Please help. . .
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Here's the link i found my macbook pro does not detect external display anymore

Just one bit of data...
I don't know what the deal is, but I had a similar situation. (It all worked fine, then I upgraded to 10.9.5 and it didn't work any more, but then I upgraded to 10.10 and then it worked. Then it wouldn't. but once in a while it would. It made no sense. ) In the end I got a different (more expensive) adapter and cable and everything works properly.

HT1338 MacBook pro will not update past 10.5.8

What can I do if my MacBook pro will not update past OS X 10.5.8
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I've tried shutting down and disconnecting and everything. I need this to work asap.

Have you checked the screensaver and power settings, sleep display etc in the System Preferences?
You can throw this mega cocktail at it, see if it cleans up your problem.
Download the free OnyX here
http://www.titanium.free.fr/
Run ALL the maintainence and cleaning aspects, , especially the caches, you can cancel the reboot in between.
Finially run the Verify > Preference file check/repair and then reboot.
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Then look at this support article about resetting the SMC/PRAM
http://support.apple.com/kb/ht3964
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We have no idea which version of OS X you are running, so here are two support articles about your issue.
iOS: Device not recognized in iTunes for Mac OS X - Support - Apple
Mac OS X v10.6: iOS device not recognized in iTunes after restart
Sometimes it's as easy as quitting iTunes, restarting the Mac, restarting the iPad. Give that a try if you haven't done so already.

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I recently purchased a MDP to HDMI adpater for my late 2011 macbook pro (I have OS X 10.7.5). I hooked it up to my television and tried to use it as a monitor but my macbook pro refused to detect display. Heck the screen didn't even turn blue when I hooked the adapter up. I wanted to make sure my port was working and hooked up my MDP to VGA and it worked like a charm the screen turned blue and my cintiq was detected immediately. I was wondering if anyone else had this problem as well?
Ther is a possiblity that it is the actual adapter because I bought a floor model in an effort to save some bucks. So I'm going to take it back for an exchange later on today and see if that works. But if that isn't the case does anyone know how to resolve this issue.

Did you click the "Detect Displays" button in System Preferences > Displays?:
Bottom-right?

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Message was edited by: Kardon
Well this is mildly embarrassing but it IS valuble to others in my situation!
*OKAY SOLVED* (must be a record I posted the question a minute ago).
I forgot to mention I also couldn't adjust brightness, but after running the software update, it seems all of the proper drivers have been download and installed because I now have full proper function of the MacBook Pro. Thanks for the wasted space, but again, this could be useful for others. If this is happening to you, just run the Software Update tool (under the apple logo in the top left) and let it finish its 800mb update, all will be solved.
Message was edited by: Kardon
Message was edited by: Kardon

I had the same problem, except mine happened after restoring from a Time Machine backup onto my new unibody MacBook. Thanks to the OP.

MacBook Pro will not detect HDD?

Hi, I own a MacBook Pro 15-inch 2.8GHz Core 2 Duo. In the middle of my work, my computer had frozen, so I shut it off and tried restarting, and even reset the PRAM. However, I got the "cancel" icon instead. After a few more tries, it turned into a folder with the question mark. I figured it was a bad hard drive due the the result of an accident involving meter fall that happened a few days prior.
Today, I purchased a replacement hard drive - a Seagate Momentus XT, and an external hard drive case for the old one, just in case the old one does work. I booted the computer using the OS X install CD only to find out the HDD hasn't been detected. I've restarted several times and no luck. Meanwhile, I installed my "broken" hard drive into a usb enclosure only to find out that it does work and functions normally. I then tried formatting the new drive to HFS using another Mac, and no luck. I've even reinstalled and switched between the two drives and still no luck.
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Thanks!
Message was edited by: BradleyMG
Message was edited by: BradleyMG

The only way to determine if it's the logic board or the cable is to switch out each. One trouble shooting thought is if you have another computer you could put the new Seagate into an enclosure and see if the other computer can see it, that will at least verify your guess that it's fine. If it's not found then you one that was DOA.
However all that being said you mentioned you got the folder with question mark screen, this indicates the logic board should be OK.
To be honest my recommendation would be to take it to an Apple Store to be checked and to determine what the bad part is.
Best of luck,
Roger

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The internal HDD will have to be replaced. Since you cannot get the MBP to acces the internal HDD, you will have either use Target Disk Mode:
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Ciao.

HT1338 MacBook pro will not detect internal speakers.

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