No sound on Boot Camp (Windows 8) red light in the headphone jack ?

I have a MacBook Pro 9.2 (i7 3rd gen, HD4000, 750GB, 8GB) and i install Windows 8 Pro 64 bit. I have a issue with my headphone jack only when i use BootCamp i have the latest driver for it (download from bootcamp application OSX). I see that inside of the headphone jack there is a red light i think that it is the optical out of it. I try to reinstall the driver no succes. Now i need help to fix it

The red light means you have jammed the digital audio jack by inserting an analog plug too far. It is not a BootCamp issie--can happen to people without BootCamp. Here is the reason for the problem I posted in another thread:
Background, or "why this happens": the audio-out port on a modern Mac is digital and is held to high dimensional standards. Most headphones have an analog plug not made to such standards. The specific issue is the the "tip-to-stop shoulder" distance on many analog plugs is just a bit longer than on a digital one and jams the "mute" contact inside the port in the muted position. <deleted>'s advice to insert a plug and gently wiggle it in the horizontal plane is exactly on target unless you are under warranty, which would still necessitate a trip to an Apple store for service.
The best action is prevention. When connecting headphones (or external speakers), put on the headphones and have an audio track running BEFORE you insert the plug. Insert the plug slowly, listening for sound on both channels and, when you hear it, STOP INSERTING.
Bottom line is you do NOT want to insert any random plug "to the hilt" until you know it is dimensioned to fit a digital port.
My MacBook Pro has the same jack. I have a pair of decent-quality, name-brand headphones and their plug is not to spec. This picture shows their plug in the port at a position that delivers proper sound and does not let the plug fall out:
Note that the shoulder is about 1/16-inch from contacting the computer case. It is secure in this position.
Every plug is different. I have a pair of El Cheapo external speakers I picked up for US$2 at a yard sale and their plug fits perfectly on my Macs with a digital audio port. Go figure!

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No sound on my mac book and a red light in the headphone jack

as in the title,
The sound controls dont work and I have a constant red light out of the earphone jack, with the earphones in all is okay but without ....silence

The red light is the digital in light, that is how it reads the headphone jack. The reason the sound doesn't work is because a switch to turn the speakers back on is stuck (note that if you boot the computer, you will hear the startup tone).
There are several ways to fix this...
Some have found that putting the headphone plug in and out several times (maybe twisting it a little) will work.
Others have used a toothpick to adjust the switch (I don't advise this because the toothpick may break).
Instead of a toothpick, many have used a paperclip (probably best to use an insulated one). I couldn't get this to work, but I would suggest straightening, folding in half, then twisting the paperclip and moving it around in the port.
You can also use a sewing pen/needle.
I have seen all of these methods online, but they didn't work for me. I took a que from this instrucable and cleaned my jack with a dry q-tip. I then cut off most of the end and turned it around inside the port. This worked, but after I put the headphones back in the same problem came up, I just did the same procedure again and it worked again (even after I plugged the headphones back in and took them out).
PS: I woud suggest putting some q-tips and possibly some scissors in your MacBook bag in case the problem arises on the move.

Is it dangerous to look at the red light in the headphone jack?

I recently purchased an early 2009 model white MacBook. Today I was installing Windows on it and I noticed a red light coming out of the headphone jack. I thought there must be an LED in there to help you locate it in the dark. I was curious about it so I crouched down next to the computer and looked inside the jack to see what the deal was.
At the time I didn't know that there is such a thing as an optical audio jack. Obviously I now know that's what the red light was all about. Now I'm wondering if looking at that light could have injured my eyes. Is it a laser, an LED, or something else? Does anyone know how dangerous it is to look at that light? I looked directly at it from close range for perhaps 3-10 seconds, with eyeglasses on. I don't remember it seeming uncomfortable to look at.

Thank you both for your replies.
GfulDedFan wrote:
To the best of my knowledge, that light shouldn't be on when the port is empty.
Yes, my understanding is that that light should only ever come on when there is a Toslink mini-plug adapter inserted into it (or at least a regular 3.5mm analog plug). However, like you said, I've seen a number of posts on the internet about that switch that turns on the digital output (red light) getting stuck in the on position (even without having plugged in a Toslink adapter). My understanding is that in my case the light came on because I was in the process of installing Windows and the driver for the audio hardware hadn't been installed yet.
GfulDedFan wrote:
As far as harmful rays, I doubt that it would be harmful because I've read about this audio problem before but never with a cornea damage attached to it.
I did look inside the jack directly at the light. I think it might be the retina that would be at risk if anything, but in any case, I sure hope nothing was damaged.
JoeyR wrote:
The power for the lasers used for digital audio is very low.
Is it a laser?
JoeyR wrote:
Especially if you didn't find it uncomfortably bright.
I don't recall having a reaction that it was uncomfortably bright and then having to force myself to look at it. If it had seemed uncomfortable I don't think I would have continued to look at it.
I don't think I actually became concerned about it until I found out that the light is for digital audio output and wondered if it is a laser. Not that I recommend looking right at a bright LED either. But I wasn't expecting a bright LED either (let alone a laser) -- like I said, my first thought was that there must be an LED inside to make the jack easy to locate in the dark (I was in a darkened room at the time.
JoeyR wrote:
If you've ever, even very briefly, had a low power laser pointer hit your eye, you'd realize it is super bright.
Fortunately I haven't, but someone who did have a laser pointer aimed at their eye told me they noticed it when they felt a burning sensation on their eye.
JoeyR wrote:
Any damage would almost always be nearly immediate. If you haven't had a problem, you're fine.
Do you think any damage would be readily apparent right away, in the form of pronounced discomfort or noticeable vision problem?

No sound, stuck on digital audio output, red LED only sometimes, headphone jack doesn't "grab" male end

Borrowing my boyfriend's computer after my own Macbook died, he had given up on the audio on his Macbook Pro as a logic board issue but I think it might be fixable.
System prefs for audio is stuck on digital output. The red LED from the headphone jack only shines sometimes (rarely, actually, but the digital output/no sound persists). No appearance of dust in the jack. What concerns me most is that the headphone male end doesn't "sit right" in the jack: rather than plugging in securely, it pops right back out.
I have a hunch this is similar to that little switch problem a lot of people deal with in the headphone jack, but the fact that the headphones won't plug in seems different. I've tried pulling the jack in and out and wiggling--no sound change, but the LED turns off and on sometimes. Any other ideas? Thank you all.

Possibly create a new user profile to test if it is a software issue. If it still has problems once tested on another profile it is most likely a hardware fault, and the only option is to take it to Apple. Honestly though it sounds more hardware related due to the power outage impacting it's performance instead of a program. Good luck buddy.

Red light from macbook headphone jack

So, after using external speakers, my sound stopped working...and the audio jack was shining red light. I looked through old threads on this site and saw that there were several different ways to fix the problem (I used a toothpick and it worked..) Only- my volume is now working fine without headphones- but there is still a red light. All the responses I red said that the light would turn off when volume started working....why is my volume working and the light still on?
Does it matter that there is the red light, if my volume is working fine...?
thanks!

meh!
Excuse my lack of tech knowledge- but all I was using the headphone jack for, was for headphones and for connecting my macbook to external speakers. So, I didn't know the port was used for anything....else?
Last thing- I don't remember when I first saw the red light anyway. I was using my computer in the dark and I saw it...and actually thought that (silly me) it was such a convenient thing to have (a shining red light) specifically so we could see where to insert the headphones or whatever if it were dark. (HA!) But then recently my volume has been getting messed up if I leave something in the headphone jack for too long....
If it isn't too much of a problem I wont worry. There are worse things.. thank you!

Red light in the headphone output of my MacBook and no speakers.

My MacBook recently has been shining a RED light out of the input for the headphones. This is accompanied by the problem of me not being able to get sound to play out of the internal MacBook speakers...I believe the two are related. I am able to play music when I plug in headphones and hook my computer up to my TV, but when I disconnect the source I cannot hear anything coming out of the computer itself. When I try and adjut the volume with the buttons on the keyboard the volume icon appears and a little "no smoking" or "circle with a line through it diganal" appears next to the level of volume that I want to hear...Can anyone please give me some insight as to what may be the problem with my MacBook.

there's a small switch in the very back of the headphone jack. I know it doesn't sound like a good idea, but just take a tooth pick or something small and flick the tab by the light. it's somewhere around the 4 or 5 o'clock position.
the switch turns the computer's audio out from digital to analogue and seems to get stuck with some computers. mine had this problem but hasn't resurfaced since.

What does the red dot in the headphone jack have to do with my phone not holding a charge, my phone has never been wet.

My phone has never gotten wet. My phone doesnt hold a charge for more than about 3 hrs., so I brought it in to Verizon about the battery. The lady looks into the headphone jack and says it has a red dot its not under warranty any more. What does the headphone jack have to do with my battery.

The "red dot" is a moisture sensor. If it is red, then your phone did get wet, or was exposed to excessive moisture, which voids the warranty. Liquid/moisture inside the phone can compromise or short out the electronics, causing excessive battery drain.

No sound, red light emitted from headphone jack

So I really have no idea how to get my sound back. I simply pulled my headphones out of the back of my Mac and I lost sound from the speakers in the computer. When I hit the adjust volume buttons on the keyboard, a circle-with-a-line-through-it symbol shows up underneath, and I hear nothing. When I look at the port where my headphones plug in, a red light is shining out of it. I've already checked sound options in system preferences. Did I break my sound by simply pulling my headphones out?? Help!

Had same thing happen a couple times and fixed it by just plugging headphones in and unplugging a couple times.
Don't know for a fact but I think the audio output thinks it has a digital optical device connected (Hence the red light). That would explain why you are getting no sound from speakers.
Next step would be to call Apple.
Randall

Unreliable sound - speaker symbol greyed out and red light in 3.5mm jack

Had my MacBook for 3 years with no problems. But over the past few months, the sound has been very unreliable. It always works when external speakers are plugged in, but when using the internal speakers it's very temperamental. It will just suddenly grey out the speaker symbol on the menu bar at the top, and a red light is visible in the 3.5mm jack socket.
Any ideas???

Your Mac believes that a digital audio cable is plugged in. You can use a toothpick or unbent paper clip to toggle the DA switch off. It's located along the side of the port, not at the back whence the light emanates.

Why is there a red light in my headphone jack

The speakers arent working and this light is on inside the jack

Open your Utilities folder and launch Audio MIDI Setup. Something there may be conflicting with your sound output. Unfortunately I do not have any MIDI devices so you will have to muddle through to find out what it is. Try selecting "built in speakers" on the left, or "configure speakers" on the lower right.
This is what mine looks like:

I have a new sound bar that I plug my phone into through the headphone jack. I also have a bluetooth speaker that I want to play through as well. Is there anyway I can play to both devices at once?

I have a speaker that I am connecting through my headphone jack but I have a bluetooth speaker in another room that I want to play through as well. Is there anyway I can play to both speakers at once? I saw another post on line that suggested going to the Audio MIDI setup and adding additional output devices. The problem is, I see that on my computer but nothing for my iphone. Can this work? I have also seen things for airplay and of course this is all making my mind fuzzy. Help!

Sure-glad to help you. You will not lose any data by changing synching to MacBook Pro from imac. You have set up Time Machine, right? that's how you'd do your backup, so I was told, and how I do my backup on my mac. You should be able to set a password for it. Save it. Your stuff should be saved there. So if you want to make your MacBook Pro your primary computer, I suppose, back up your stuff with Time machine, turn off Time machine on the iMac, turn it on on the new MacBook Pro, select the hard drive in your Time Capsule, enter your password, and do a backup from there. It might work, and it might take a while, but it should go. As for clogging the hard drive, I can't say. Depends how much stuff you have, and the hard drive's capacity. As for moving syncing from your iMac to your macbook pro, should be the same. Your phone uses iTunes to sync and so that data should be in the cloud. You can move your iTunes Library to your new Macbook pro
you should be able to sync your phone on your new MacBook Pro. Don't know if you can move the older backups yet-maybe try someone else, anyways,
This handy article from Apple explains how
How to move your iTunes library to a new computer - Apple Support''
don't forget to de-authorize your iMac if you don't want to play purchased stuff there
and re-authorize your new macBook Pro
time machine is an application, and should be found in the Applications folder. it is built in to OS X, so there is nothing else to buy. double click on it, get it going, choose the Hard drive in your Time capsule/Airport as your backup Time Machine and go for it. You should see a circle with an arrow on the top right hand of your screen (the Desktop), next to the bluetooth icon, and just after the wifi and eject key (looks sorta like a clock face). This will do automatic backups of your stuff.

Can I upgrade to Mountain Lion with Boot Camp windows 7?

Can I upgrade my mac book pro to Mountain Lion when I have Boot Camp Windows 7?

Welcome to the Apple Support Communities
You can upgrade to Mountain Lion without any problem, but I recommend you to make a backup before upgrading. Also, after upgrading OS X, I recommend you to download the most recent Boot Camp drivers on Boot Camp Assistant and install the drivers on Windows

My speakers on my macbook receiently quit working after I had been using some headphones. My headphones still work whenever I plug them in with both increase and decrease in volume. I have also noticed a red light on the inside of the headphone jack.

My speakers on my macbook pro quit working the other day after using my headphones. when I try to adjust the speakers my screen indicator sayes that it is at full volume on the bar but also muted(circle with line through it). I also noticed a red light inside my headphone jack. My headphones still work including volume. Any quick fix?

Hopefully one of these steps should solve the problem.
1. System Preference > Sound > Output > Internal Speakers
    Make sure Mute is not enabled.
2. Remove the headphone.
    If you see red light in the headphone port, plug the headphone
    in and out of the port 5 or 6 times to flip the microswitch inside.
    Sound output may be stuck in the digital mode.
3. Reset PRAM. http://support.apple.com/kb/PH4405
4. Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own".

Audio muted/disabled- red light coming out of jack????

what the heck? anyone know what's going on here? red light in my headphone jack and volume control non-operational. reset the PRAM to get speakers working for a moment before problem returned. works fine when headphones in, but not without.
and the red light shining out... what IS that?

Hey all-
I've worked on laptops before and didn't feel comfortable sticking a metal clip into it. I did snap the end off a Q-tip and wiggled the cardboard ever so gingerly and it went off. BUT later in the week the same problem occurred. I've got an appointment with Apple tomorrow and will keep you up to date on the "official word" with this problem. I'm still in the year warranty period (refurbished pruchased, year up in November) so they should replace anything that is failing this soon in the game.
Have a co-worker that just had a new MBP's video fail after less than a month of use---Apple replaced the whole machine, but only because it was in the first 30 days of purchase. Doubt they'll make me the same kind of offer. Still sorta miffed to have problems with my newest machine. Never had to get AppleCare, but think I'll have to with this guy... hope it's not IceBook Logic board blues for these first Intel offerings.

HT201541 Mac mini Late 2014 Boot Camp Windows 7 sound issue

Hi,
I'm wondering if anyone can help me with my Mac mini (Late 2014) and Boot Camp (Windows 7). The problem I'm having is that there's no audio when I boot into Windows 7, though everything works fine under OS X. After installing Boot Camp and Windows, the audio worked perfectly up until yesterday, and now there's nothing. I've tried updating as well as uninstalling and reinstalling drivers, but this hasn't helped at all.
When I open Volume Mixer and Playback Devices, the sliders show that audio is playing, but I hear nothing - either from the built-in speaker or when I headphones.
The Device Status indicates that "This device is working properly" and that the drivers are up to date. Tthe following drivers are installed:
dmk.sys
HdAudio.sys
ksthunk.sys
portcls.sys
SysFxUI.dll
WMALFXGFXDSP.dll
Has anyone else encountered this issue, or does anyone have any tips on how I might fix this?

Is the volume Muted? The Mac has an Audio database of devices and volumes in NVRAM, so an SMC Reset or PRAM reset might help. Please see this link for appropriate keys Startup key combinations for Intel-based Macs - Apple Support.

No sound on Boot Camp (Windows 8) red light in the headphone jack ?

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