Neither usb port seems to be working

Any ideas? Have tried to use my usual memory stick this am but it will not work in either port. was working on Friday.

Hi,
Thanks for your reply. Am away from home and only have this stick with me. However, has tried in another computer, working fine.

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All USB ports seem to stop working "randomly" but some remain functioning until unplugged and plugged back in. [WINDOWS 8.1]

The devices that die right away are the network adapter and any USB memory stick plugged in, they still have their lights and all running but aren't recognized in "This PC" and the network adapter isn't found in "Control Panel\Network and
Internet\Network Connections".
My keyboard, wireless mouse that runs through the keyboard's USB ports and the external HDD remains functional UNTIL I pull the plug on them, after that plugging them back in does nothing.
I put randomly in quotations because it seems to fail more often when I download something at speeds over 3Mb/s, for an example downloading Hearthstone through the Battle.Net client will more often than not make the issue happen after a little bit. BUT it still
happens randomly during NO network load what-so-ever.
Parts:
CPU| FX-8350
GPU| Radeon 5850
Motherboard | Crosshair IV Formula
RAM | 2x DDR3
PSU | 700W Gold
SSD| Evo 850
OS | Windows 8.1
I HAVE:
* [Downloaded these chipset drivers](http://support.amd.com/en-us/download/chipset?os=Windows%208.1%20-%2064)
* Installed all Windows 7 drivers I could find except the BIOS ones due to lack of Windows 8.1 drivers from http://www.asus.com/Motherboards/CROSSHAIR_IV_FORMULA/HelpDesk_Download/
* Turned off "Allow this computer to turn off this device to save power" in Device Manager for ALL devices in the USB tab that had the option, and the Network tab.
* Set the Power Options to high performance and disabled "USB Selective Suspended Setting"
I simply don't know what to do anymore and it's breaking me down, I need this fixed before the weekend or the LAN I'm planning to go to will be a disaster and I'll probably go insane trying to solve this myself.
Just tell me whatever more information you could need and I'll supply it, I'm desperate to get this solved.
**I never had any of these issues on my old PC that had different parts but the same network adapter and external HDD so they are not to blame for this, same for keyboard and mouse.**

Hey, I hope this helps you out a bit... I have had the same issue on my Asus K55A notebook with Win8.1 Pro x64 from the beginning! Thru my extensive research I found something interesting and the possible cause to all this! What I found was that by design
the xHCI Host Controller has virtual HS 2.0 Ports linked to the 3.0 Ports... Enabling compatibility with 2.0 devices ok... What happens is that the xHCI stack is unstable just like you say... The ONLY WAY I was able to fix the problem was by unlocking the
UEFI/BIOS to allow me full access to USB Configurations... I had to disable 2 of the HS ports under the xHCI Controller since I have only 2x 3.0 ports... This allowed 3.0 devices to be enumerated correctly under the xHCI stack and 2.0 devices now were enumerated
under the EHCI 2.0 stack... That's what worked in my case... I'm still digging around for more info about this issue because I find it so odd that no one discovered this when designing xHCI stacks and drivers at MS for Win8/8.1 x64... I hope I shed some light
on this issue... Good luck and keep us posted!
Hi, Sebastian. I have the same problem but i'm getting crazy trying to solve it. Can you help me to unlock the UEFI to access full USB config? and give me some suggestions on how to solve the problem?
My mail is roquen(at)gamail(dot)com
Thanks in advance!

I have three ipods, none of which is being recognized by my itunes. I have the current editions and tried different USB ports. The mouse works just fine in the USB port. I have reset the ipods. Any ideas if it's the USB or the ipod or what's going on?

I have three ipods, none of which are being recognized by my itunes. I have reset each ipod, with no results. I wonder if the problem isn't with the USB ports. The mouse works fine in each port; nothing happens when I plug in the ipods. I have tried two different USB cables. I have no other USB devices with which to test. I have made sure I have the most recent updates and rebooted the computer. Any idea what is going on?

Did you already have a look at this article?
iOS: Device recognized in iTunes for Mac OS X

After re-installing OSX Lion neither USB Ports work

I have a Macbook Pro 15" Intel Core i7 Mid 2010 model, I had upgraded from the App Store to OSX Lion and was running ok, but at the time had half the disk partitioned into Windows, so got to the stage that I didn't want Windows so wiped it, and backed up the OSX Partition as I figured why not have a nice fresh OSX Lion install . . . . BIG MISTAKE
Since I've re-installed OSX Lion I now have no connectivity through the 2 USB Ports, or the SD Card as far as I can tell.
Since I'm a month out of the warranty I don't exist to Apple Support any more, so I've been trying everything I can think of or any suggestions I can find.
I've tried the PRAM and SMC resets which obviously don't work, I've tried the old 3+2 key trick - yup, you guessed it, NOTHING.
I have re-installed Lion 3 times, same deal - feck all is being recognised.
I've resorted to sticking a small Windows partition on at the moment to make sure it's not hardware issue, not sure what else I've tried?? Oh yeah, took it apart, removed the battery for an hour or so, even tried booting with no battery - nothing.
Any suggestions other than playing frisbee would be welcome, although, to be fair, I might end up having a game of that if this carries on ...

Ok, so been to the Genius Bar and basically they went through everything I had done already just to test it, and then also their own in-house hardware test that apparently only they can run, which is fair enough - all tests came back reporting the board in fine condition, and that the SD Card and USB Ports were fine, no errors.
So, we tested again after another PRAM/NVRAM and SMC Reset - still nothing - so he took it away and ran it on their other diagnostic machine which reset all the firmware and put it all back on again, testing at each stage and yet still nothing.
Basically I need a new Logic Board which will cost £400-£500 to replace, I know what you're thinking, and I am too, how brilliant is that!! .... Not very, but hey, what can I do?
Next stop, home insurance, I'm sure I pay you for some reason ... wish me luck!
Oh, I am going to try one more Lion install, just for the **** of it.

Neither USB ports are working on my Macbook Pro

Hi,
I have a Macbook Pro and for the past year or so both my USB ports have been extemely tempromental and have only occassionally worked. Both have now stopped working - they both give out power, for example, if I plug my iPhone into my mac when turned off it will turn on, but it won't show that it is charging.
I have reset the SMC and the PRAM but this hasn't helped resolve the issue. All software it up-to-date. My mac often 'sleeps' for no apparrent reason and takes extremely long to wake up and it often freezes. According to the Disk Utility there does not appear to be any problems with my hard drive.
Do you know of any other steps I can take to resolve the issue? I am not covered by apple care.
Thank you in advance,
Daniel.

You certainly would if you had Apple care, but I sense you don't. I suspect that the odds are against you but one never knows unless one tries.
I cannot give you any realistic cost figures, but I have seen reported on this forum that logic board replacements are well into the hundreds of dollars. I hope that the repair will not come to that.
In spite of my pessimistic response, I wish you a very good 2013.
Ciao.

T400 - crappy USB ports and refusing to work with HP keyboards

Hello forum,
I work in a large multinational company and all of our laptops are now IBM Thinkpads from T60's, T61's, and now of course they're Lenovo T400 and T410 laptops.
Also we still have some of the Thinkcentre towers.
There seems to be other people with the same problem where the weak plastic / incorrectly sized ports are causing problems.
Well i've just had my 4th Lenovo laptop cause problems and so far they've all be T400's or T410's with the exception of one Thinkcentre.
Each time there is a problem its because the crappy plastic they used to make the usb port pin protector has snapped off except in the case of the Thinkcentre PC.
The problem is that the vast majority of our keyboards are the basic HP keyboard and all of a sudden the keyboard stops working with the laptop.
The keyboard could be working fine for weeks months or days and then all three lights will light up at the same time on the keyboard (num lock, caps lock and scroll lock) and the keyboard will no longer function.
The only work around for the problem is to swap out the keyboard with an older Fujitsu Siemens Keyboard, or if i can find one an actual Lenovo keyboard.
Do some lenovo systems have an allergy to HP keyboards?
Or could someone tell me if theres a different cause for this problem.

which HP keyboards are you talking about? there are quite a few different model of HP keyboard used by businesses.
Also, is this problem caused by one keyboard or multiple HP keyboards?
Keyboards should be designed with interoperability, but sometimes a usb could be badly designed where it pinches the usb ports.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

W510 Docked in 433820U Port Replicator USB Ports Occassionally Stop Working

Has anyone had the problem where the USB ports on the 433820U Port Replicator stop working? I've had it happen on several occassion where the USB ports on the port replicator stop working when I do something seemingly unrelated (e.g. unplugging a CAT5 network cable, dropping something on the desk near the docked laptop). Once this happens, I have to unplug the USB devices from the port replicator and plug them into the laptop's USB ports in order to continue using the keyboard or mouse, or turn the laptop off and then back on. I'm trying to figure out if this is a defect in the port replicator or some outdated driver. Anyone else have a similar problem?

This system supports USB3 ports but they are only USB2 on the port replicator. What's up with that?
Hi William:
I kinda, sorta think that the reason that the USB connectors on the Dock are only USB2 has to do with the speed of the connection between the big dock connector on the bottom of the notebook and the USB ports on the back of the Dock.
I notice a similar problem when I had a W500 and a earlier model Dock. That earlier model dock had an UltraBay in it. If I put a hard drive (installed in a caddy) in the Dock, it ran very slowly - as if it was connected by USB - but if I put the same hard drive in the same caddy into the UltraBay on the side of the W500, it ran very, very fast. So, all I could attribute this to was that the data just could not flow through the dock connector on the bottom of the notebook as fast as it could flow through the UltraBay connector on the inside of the notebook.
Perhaps the same concept applies to the USB connectors on the Dock... maybe the USB3 connectors on the notebook itself have a faster data connection into the computer than the USB connectors on the dock, which need to pass through that big dock connector on their way to the computer.
Michael
W520 (4270 CTO), which replaced a W500 (4062-27U), which replaced a T42P, which replaced an A21P...

USB ports seem to be underpowered

Hello.
I have a Patriot USB flash drive that frequently cannot mount when plugged into my iMac (OS 10.4.11). The drive mounts fine in my Macbook and Dell PC. If I let the drive sit in the port long enough, it sometimes accumulates enough power to work. And this is with all other USB periferals (except keyboard and mouse) unplugged.
And I have other problems with other USB devices, where the devices cannot be seen by the computer because they are not receiving enough USB power.
Any thoughts?
Thanks

Thanks for the suggestions, but yes, I have tried all three USB ports, and the behavior is exactly the same.
Also, the drive is properly formated. It works absolutely fine on my Macbook. Never any problems.
I have also had erratic performance with my USB Hub (D-link DUB-H7). And a quick scan of the reviews for this product at Amazon indicates that those with iMacs have erratic performance also, while those using it with other computers seem to have zero problems. Perhaps there is an iMac specific problem that develops (at least with certain iMacs) and USB ports.
I wonder if resetting power management will help?

Mac Pro USB ports and bluetooth not working

I have a Mac Pro (early 2008) Quad-Core Intel Xeon, 2.8 GHz, 4GB ram, Airport card, Magic Mouse. Suddenly the keyboard and wired/bluetooth Mouse are unavailable, so it is not possible to control the computer. The only way I can use it is by using Screen Sharing from my MacBook Pro - which is obviously pretty useless except for diagnostics! All the USB ports (front and back, as well as those on the Cinema Display - when connected) are dead. System profiler shows no problem with them, but also shows nothing connected. Bluetooth in menu bar shows as "Bluetooth: not available", and in system profiler shows as "No information found".
I've tried all the usual remedies. Powering off overnight with power cord disconnected, all peripherals disconnected, then booting up again. Holding in the power button for ten seconds when the power cord is disconnected. Obviously I can't reset the pRAM (because the keyboard is not recognised, even before the OS loads). The first couple of times I tried this process, it did bring back the USB ports, even the bluetooth became temporarily available, but soon disappeared again. USB ports died next time I rebooted.
However, in the last couple of days, the process produces no results. No matter how long I leave it disconnected, USB ports are not working and bluetooth is just not there...
I've checked for other threads on this topic, but most other people seem to have issues with either front or back USB ports, or even just one or more individual ports. My problems have only been with all ports or none.
Does anyone have any suggestions to get my MacPro up and running again properly?

Just waking this thread up again in case anyone has had any other ideas.
Since last posting, usb became functional again, (came back on a couple of hours after a restart) and as long as I kept the machine alive, usb would stay alive. Bluetooth came back on briefly, but for most of the time was unavailable. System profiler shows no problems and Console does not report any usb related errors as far as I can see.
After a recent restart, usb disappeared again, and despite numerous restarts and being left on for a couple of days (and subsequently left off for several days) it has not come back. When usb is not working, examining the system profiler (through screen sharing from my macbook) usb shows no errors, but also shows no connected devices. I can charge my ipod nano with any of the usb ports (front or back), so power does not seem to be the issue.
I can't reset pRAM (because the keyboard is not available at boot), but have reset SMC numerous times. Have tried other keyboards, and mice. No joy.
I seem to have run out of ideas. Any suggestions?

Why with last update of mevericks usb ports and xcode not works ?

yesterday i install the last update of maverick and now i cant use the time machine, usb key and xcode
do you have a solution for that ?

Just waking this thread up again in case anyone has had any other ideas.
Since last posting, usb became functional again, (came back on a couple of hours after a restart) and as long as I kept the machine alive, usb would stay alive. Bluetooth came back on briefly, but for most of the time was unavailable. System profiler shows no problems and Console does not report any usb related errors as far as I can see.
After a recent restart, usb disappeared again, and despite numerous restarts and being left on for a couple of days (and subsequently left off for several days) it has not come back. When usb is not working, examining the system profiler (through screen sharing from my macbook) usb shows no errors, but also shows no connected devices. I can charge my ipod nano with any of the usb ports (front or back), so power does not seem to be the issue.
I can't reset pRAM (because the keyboard is not available at boot), but have reset SMC numerous times. Have tried other keyboards, and mice. No joy.
I seem to have run out of ideas. Any suggestions?

HELP ! My USB ports seems to be deads !

Hello,
For my weekly back-up, I use an USB external HDD that have to use 2 USB ports.
In order to use only 1 port, I've connected my external HDD to a power supply.
Unfortunately, it seems that the power suplly I used wasn't the goos one for my HDD and when I've connected the HDD to the MacBook, the MacBook as turned off. So, I quickly have unplugged the USB and I've reboot the MacBook but it told me that the USB port was using to much energy and that it will be disabled.
So, I've unplugged all the rest on the USB (my keyboard with my mouse plugged-on) and I've reboot the MacBook. Unfortunately, it told me again that the USB port was using too much energy.
So, I turned off the MacBook, unplugged the power supply and removed the battery and I plugged my mouse to the 2 USB ports in order to unload a possible capacitor too much loaded and I turned my MacBook back on.
Now, I don't have any message but the 2 USB ports are not working. Here is a capture of my System Informations :
http://dl.dropbox.com/u/331131/info_sys.png
I searched how to activate my ports on the Internet but the only solution I found was to reboot the laptop, and it's not working for me...
Do you know how to activate manually the USB ports or do I have to make my mourning ?
Thanks,
-Pit
----French version----
Bonjour,
Pour mon back-up hebdomadaire, j'utilise un disque dur externe en USB.
Malheureusement, celui-ci m'oblige à le branché sur les 2 ports USB de mon MacBook, ce qui fait que c'est assez chiant de bosser dessus pendant que le disque dur est branché.
J'ai remarqué que mon boîtier de disque dur avait une prise pour alimentation externe. J'ai donc branché la première alimentation qui m'est tombée sous la main et qui semblait être faite pour lui. Comme ça, j'avais l'intention de ne brancher le boîtier qu'à un seul port USB et ça aurait dû fonctionner...
Sauf que voilà, de toute évidence, l'alimentation utilisée n'était pas la bonne et lorsque j'ai branché le boîtier, le MacBook s'est éteint.
Je me suis empressé de le débranché et j'ai redémarré le MacBook.
Au démarrage, celui-ci me dit qu'un port USB consomme trop d'énergie et qu'il sera désactivé. Et effectivement, il l'est. Je redémarre donc en débranchant tout ce qu'i y a sur les ports USB (mon clavier et la souris qui est branchée dessus) et je redémarre. Rebelotte, le même message qui revient. Je l'éteint donc, le débranche, enlève la batterie, branche ma souris en USB pour "décharger" un éventuel condensateur trop chargé et je relance la bécane avec la batterie et l'alimentation.
J'ai plus le message, donc j'ai un peu d'espoir qui revient et je rebranche ma souris pour tester le port... rien.
Je redémarre, re-test... rien.
Je vais dans les informations système, et j'ai ça :
http://dl.dropbox.com/u/331131/info_sys.png
J'ai cherché comment ré-activer mes ports USB mais la seule solution que j'ai trouvée c'est de redémarrer la machine, ce qui ne marche pas dans mon cas.
Avez-vous une solution pour ré-activer mes ports ou dois-je faire mon deuil ?
Merci.
-Pit

Try to reset the parameter random access memory (PRAM) and nonvolatile RAM (NVRAM) on your computer. Turn off your computer, then restart it and immediately press and hold the "Command," "Option," "P" and "R" keys on the keyboard. Release the keys after you hear the startup chime for the third time and your computer should boot normally.
To avoid such issues you may use a self-powered USB hub (one that comes with a separate power brick).

My iPod touch 4th gen iOS5.1.1 can't be recognised by my computer and I have tried different cables and usb ports but nothing has worked. The iPod is brand new and was only opened today. Any ideas on how to fix this?

I have just today recieved a brand new iPod Touch 4th generation iPod with the latest update. Everything else on the ipod is working and my computer is able to read the camera fine, but iTunes cannot recognise it - even after restarting and trying different USB ports and cables. There is nothing at all coming up on the device list and iTunes is working as it would if I had no iPod plugged in. This is my first iPod on this computer and I have already tried redownloading iTunes. My computer is a windows XP computer. Does anyone have any idea on how to fix this problem?

Since this is an XP machine, which version of iTunes do you have installed? Is it the latest version?
Have you tried starting iTunes, attach the USB end of the cable, then while holding the home button on the iPod connect the 30-pin connector end of the cable to the iPod...that is the recovery mode but also should make iTunes see the iPod.
If that doesn't work you may need to take the iPod back and have it tested by the genius bar techs to make sure the connector is not bad.

USB port 1 & 3 not working, BT not available

iMAC 27", Mid 2011
The USB port 1 & 3 (1 is near the firewire port) are not working, also Bluetooth is not available.
I try to reset PRAM and SMC but it didnt change the situation.
When executing Hardware Test (Diagnostics) no errors are found (short and long test). When in the hardware test, all USB ports are working.
AND afterwards when restarting Mavericks the USB port 3 works again - but when I then unplug the mouse, put it to port 4 and back to port 3 it does not work anymore. (I didn't check if the same happens with port 1).
Any suggestions how to fix it?
Thomas

Unfortunately it doesn't change anything.
Yesterday I reinstall Mavericks from scratch (erase hard disk and install OS). Now no bluetooth icon appears in the menu bar - even not in system preferences.
Some further issues I notice but I'm not sure if they are related to the bluetooth issue:
it takes about 60sec. after a reboot/restart until the apple logo appears and the progress indicator is running
I found a lot of USB error messages in the logs:$ sudo dmesg | grep USB
USBMSC Identifier (non-unique): 000000009833 0x5ac 0x8403 0x9833, 2
USBF:    6.179    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    12.182    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    12.215    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 1 of Hub at 0xfa110000)
USBF:    18.188    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    24.191    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    24.222    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 3 of Hub at 0xfa110000)
USBF:    30.195    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    36.200    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
USBF:    36.231    The IOUSBFamily is having trouble enumerating a USB device that has been plugged in. It will keep retrying. (Port 2 of Hub at 0xfa110000)
USBF:    42.205    AppleUSBEHCI::Found a transaction which hasn't moved in 5000 milliseconds on bus 0xfa, timing out! (Addr: 0, EP: 0)
It seams to me like the internal USB hub is in trouble.
Unfortunately I can not compare it to a working iMac.
ThoMo

Apple LED Cinema Display -- USB Port + iSight Camera not working

I see an unusual problem with my brand new LED Cinema display. When i put my Macbook pro in sleep mode it deactivate all the USB ports and isight camera in LED Cinema Display. When I turn the computer back on I cannot use USB or iSight camera. I tried below solutions -
- Restarting the Macbook pro and LED cinema
- Completely draining the power in both LED Cinema and Mackbook pro.
- Resetting Macbook pro.
- Upgrading LED Cinema to latest and greatest firmware ( firmware update 1.0)
Did anyone encounter this problem ? If yes please post your thoughts or any solutions.

After numerous attempts of powering down/resetting the macbook pro and led cinema i was able to make the USB ports work. However I was able to successfully reproduce the problem once again by putting the mackbook on sleep mode.
I finally ended up shipping my led cinema back to apple for a replacement. I will try the test case with the new one when it arrives.

17" MBP Left side usb ports and audio stopped working

Hello All,
I have a situation here with my MBP. A couple months ago it stopped detecting my airport card (not installed), I replaced it with another one which still showed as not having a card installed. So, I have just been using a usb wifi adapter which has been working fine, but recently the 2 usb ports on the left side have stopped working as well as I lost any sound. I've tried with or without headphones, still no sound it just shows a greyed out speaker and a circle with a line through it when I try to adjust volume. My initial thought was that the left I/O board was bad, but the dc-in board continues to work which, I believe, is part of the left I/O board. Any help or ideas would be greatly appreciated!

Is the machine at least 4 years old? If it is symptoms you are getting is a sign the PRAM battery is about to go. Get it replaced. If not, try zapping the PRAM.

Neither usb port seems to be working

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