HT1379 MacBook Pro USB port stopped working

USB port stopped working....
How can I diagnose my USB port to test for hardware or software problem

Try Resetting the System Management Controller (SMC)

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Macbook pro USB ports stopped working

After downloading the new OS (and the updates), my USB ports have stopped working. I've tried a variety of resets (resetting the PRAM, GMC reset, resetting the computer, etc.). One of the USB ports would read the usb for a wireless mouse (and only that wireless mouse, no flash drives or ipod cables), but that stopped working as well.
What else is there to do? The system is only a year old. I've never had a problem concerning usb ports on other computers, especially after a software upgrade.
Any ideas?
Thanks

I have had a similar problem since upgrading to Lion 10.7.3. I have a MacPro and all was going well. However, now I have huge problems with my USB ports. Some are recognized some of the time if I unplug then replug, but not in a reliable manner. This applies to USB ports at both the front and back of my computer. My printer won't work or my mouse won't work (but at times I can get one or the other), but any external USB drives (including camera's) and my iPhone are not recognized. Obviously very frustrating. Other issues that seem to have occured are recognition of Outlook for Mac, so have reverted to MacMail (not as good, but working).
Looking through a variety of threads, this issue isn't that new going back to at least July of 2011 (http://www.mac-forums.com/forums/os-x-operating-system/245665-os-x-lion-will-not -read-external-hard-drives-usb-flash-drives.html).
I am also involved in long-running saga with "upgrade" from MobileMe to iCloud that has led to many individuals (including myself) losing "push" email capability despite 9 months and 35 pages worth of problems on the Apple Support site (https://discussions.apple.com/message/18033340?ac_cid=142432#18033340).
Having been an Apple user since 1988 it is ironic that as it becomes more popular it becomes increasingly less reliable.
Does anyone have any solutions for the USB problem that are reliable?

Macbook Pro - Usb port stopped working

One of the 2 USB ports has suddenly stopped working and will not recognise any device.

Reboot the system and try it again.
If it still doesn't work thjen you can try a SMC reset and a PRAM reset and if that doesn't work then it's time for a trip to the Apple Genius Bar.

Brand new Macbook pro one USB port stopped working

Brand new Macbook Pro 15 with Retina display. One of the USB ports stopped working after 24hours.

Serial Port Configuration and Port definition is reset by
NVRAM http://support.apple.com/kb/ht1379
If no good I would return the machine ASAP:
Genius reservation http://www.apple.com/retail/geniusbar/
check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

USB ports stopped working in my Macbook Pro

USB ports stopped working in my Macbook Pro

I do not know anything about audio consoles nor do I have an iPhone.
My iPod also does not show on the desktop but it is recognized in iTunes, Check if that is the case for your MBP.
Do you have the appropriate boxes checked in Finder Preferences?
See if this support article is of any assistance:
http://support.apple.com/kb/TS1410
If you have an external HDD, connect it to your MBP and see if it is recognized. If it does not show on the desktop, check Disk Utility.
Have you tried all USB ports? It could be that the problem lies in your MBP.
Ciao.

Macbook Pro USB port is not working

I have a Macbook Pro 15-inch mid 2010 running Mavericks 10.9.1, the problem is that one of de two USB ports stop working, does not recognize any USB divice. I already tried restarting the PRAM and the PMU and the problem persists. Please help!

Did you try a SMC reset? If you di and it still doesn't work thenn it is broken. The only way to fix it is to have the logic board changed.

1 of 2 USB ports stopped working after 10.7.2 upgrade

I have the newest Macbook Pro. I upgraded to 10.7.2 today and immediately after, 1 of my 2 usb ports stopped working.   Thought it may be the cable, so I switched cables. Tried plugging in my iPhone, my portable drive and nothing.   Both work on the other port though.   Both ports worked fine before the update.
I've rebooted 4x.
Suggestions?

    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".
If this does not help, contact Apple.
Genius Bar reservation
http://www.apple.com/retail/geniusbar/
Best.

One usb port stopped working today

One of my USB ports stopped working today. I think it may be related to Itunes update today. Has anyone else seen this recently? I restarted my computer - but that didn't help. I have a MacBook Pro - running Lion 10.7.5
Any suggestions? I saw one USB Hub when I went to Apple --> About this Mac, but couldn't tell if both were there.

http://www.ehow.com/how_7351075_reset-usb-ports-mac-laptops.html

My MacBook Pro speakers are stopped working and on screen volume icon shows in gray colour I am unable to change the volume.

My MacBook Pro speakers are stopped working and on screen volume icon shows in gray colour I am unable to change the volume.

Go step by step and test.
1. System Preference > Sound > Output > Internal Speakers
    Highlight Internal Speakers.
    Make sure that Mute is not enabled.
2.Plug in and 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.
    Try this even if you don’t see the red light.
3. Reset PRAM. http://support.apple.com/kb/PH14222
    Do this twice
4. Reset SMC.     http://support.apple.com/kb/HT3964
    Choose the appropriate method.
    Choose the method for:
    "Resetting SMC on portables with a battery you should not remove on your own".
5. Applications > Utilities > Audio MIDI Setup
    Audio Devices window
    Side Bar
    Click the Built-in Output.
    Under Mute any of the boxes checked? If so,uncheck it.
6. System Preferences > Sound> Sound Effects
    Play sound effects through:
   Select "Internal speakers" and then back to "Selected sound output device".

HP Pavilion dv6 All 4 USB ports stopped working

Hello,
I recently bought a Pavilion dv6-6c11sa laptop. Windows 7 Home Premium 64-bit
Everything was working fine for about a week, and then yesterday all of the USB ports stopped working. I have 4 USB ports in total, two 2.0 and two 3.0. No matter what peripheral device I plug in, mouse or flash drive etc, they're not recognized by the laptop. The lights don't even light up on the devices, regardless of the port. I've tried uninstalling and reinstalling the drivers in device manager, taking out the battery and rebooting, installing the chipset drivers (AMD), nothing works. No programs had been installed 3 days prior to the occurence, although I had rebooted several times in that time frame. I simply booted up the laptop yesterday, and nothing worked.
Could anyone offer a solution or suggestion, please?

Hello,
I recently bought a Pavilion dv6-6c11sa laptop. Windows 7 Home Premium 64-bit
Everything was working fine for about a week, and then yesterday all of the USB ports stopped working. I have 4 USB ports in total, two 2.0 and two 3.0. No matter what peripheral device I plug in, mouse or flash drive etc, they're not recognized by the laptop. The lights don't even light up on the devices, regardless of the port. I've tried uninstalling and reinstalling the drivers in device manager, taking out the battery and rebooting, installing the chipset drivers (AMD), nothing works. No programs had been installed 3 days prior to the occurence, although I had rebooted several times in that time frame. I simply booted up the laptop yesterday, and nothing worked.

A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port. WHen we plugged it into the port on the keyboard, the device works. Why?

A barcode scanner that was connected directly to the Mac's USB port stopped working as the "USB had too much power drawn", even though it has worked for over a year in that port. When we plugged it into the port on the keyboard, the device works. Why? Obviously the device is operational. Could the USB port have burned out from having too much power drawn? If so, is it reparable?

It can't draw "too much" power, it can only draw as much as the USB port is able to provide and no more. IIRC, the keyboard port has a lower power output than the iMac's port.
That being said, yea, it's possible that the port has failed and it can be replaced or if another port works you can use that one. Although if it is still under warranty or covered by Apple Care, then I would take it to an Apple Store or service provider to get the port repaired.

Macbook Pro optical drive stopped working after upgrading from Mac OS X 10.6 Snow Leopard to OS X Mavericks.

My Macbook Pro optical drive stopped working after upgrading from Mac OS X 10.6 Snow Leopard to OS X Mavericks.. I wonder what's the work around or troubleshooting to fix this. Thanks!

try and Reset the System Management Controller (SMC)

Macbook pro optical drive stopped working after installation of mavericks

macbook pro optical drive stopped working, just spins and won't eject, ever since I upgraded to Mavericks, thoughts?

I have the same problem and was advised by someone to reset System Management Controller (SMC). I haven't tried it yet though. I wish it could fix it. Let's give it a shot!

My USB ports stopped working. So did my dvd drive. I have a Pavillion Laptop. Model 1245dx.

My USB ports stopped working. Do did my DVD drive. I did do a Windows update yesterday. Any ideas out there? I can't use my mouse or printer. Help!

Try a windows system restore, pick a date before the windows updates were installed.

Hi, i have a problem that my macBook pro keys suddenly stopped working. The power button,volume keys, brightness keys and shortcuts do not work. Does anyone know why or how i can fix this problem?

hi, i have a problem that my macBook pro keys suddenly stopped working. The power button,volume keys, brightness keys and shortcuts do not work. Does anyone know why or how i can fix this problem?

hi, i have a problem that my macBook pro keys suddenly stopped working. The power button,volume keys, brightness keys and shortcuts do not work. Does anyone know why or how i can fix this problem?

HT1379 MacBook Pro USB port stopped working

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