Two of the three USB ports works only on Compaq CQ71 (Windows 7).

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• Tecra S2: HDD as unknown device on two of the three USB ports

  Hey again,
  I thought then that I was here anyway I could ask this too.
  The tecra S2 has 3 USB ports, they all work very well for my USB mouse and other small things like the wacom tablet...
  But when I plug my external hard drive in two of them, it says that it is an unknown device...

  I think, but am not sure, that this might have something to do with something once, we had to do in school;
  We had once set up a pilot for a small converted Converter a series (or parallel, cant he recall) cable to the usb port
  (I have already uninstalled the drivers but nothing has changed)

  It's just a guess...

  any idea on how to solve this little problem? : p

  Hello

  You said external USB HDD appears as an unknown device on two of the three USB ports.
  What appears if you connect the HARD drive to the USB port on third?
  It appears as an unknown device or what?

  The device usually appears as an unknown device in device because manager not installed device drivers.
  I check the HARD disk for the drivers and try to install it again.

• Two of the three USB ports does not.

  Two of the three USB ports on my laptop have stopped working today for no apparent reason. I had nothing new plugged in, I was not something out of the norm with my machine, but the mouse does not work all of a sudden. I swapped on the keyboard and the mouse and the mouse was fine, but the keyboard works not so it's not the device. I ran a diagnostic care on port vaio, he said that there was no problem. Any ideas?

  Hello

  Perform the steps from the link below and see if it helps.

  Tips for solving problems of USB devices

  Hope this information helps.

• Satellite U400 - two of the three USB ports are not working

  Hello

  I have laptop Satellite U400 who has three USB ports.
  One of these 3 ports does not work correctly and the other two ports do not work.
  Is there anyone to show me any solution?

  Thanks in advance,
  Concerning

  Any solution? You mean a magical solution? :)

  No one knows the configuration of the laptop.
  No one knows what OS you are using.
  Nobody knows what you did last time with your laptop.
  No one knows how long you have this problem.
  No one knows what are the USB devices that you use to test USB functionality.
  What you have already tried to do about it?

  You want to have more questions?
  Maybe you should write more than three short sentences as a description of the problem.

• Two of the four USB ports on my laptop has suddenly stopped working!

  My laptop (HP Pavilion) has a total of 4 ports USB (two on the left side) and two on the right side all of a sudden my laptop developed this problem, two ports USB on the left side of the laptop no longer works... They didn't stop working completely, because I can still charge my phone via the ports, but they do not detect any storage device I plug into them. The other two on the right side work perfectly... I checked my mobile device manager and the defective thing only seems to me pointed out under "other devices", where the driver for 'Fresco Logic' hub USB root is not installed... it shows "the drivers for this device are not installed (Code 28)" Please, this could be the problem and where can I find the driver?

  Hello

  You are welcome!

  I am pleased that the issue is resolved. Since it works fine, I do not think you have to worry.

  However, you can check this link:

  http://support.Microsoft.com/kb/2654568?WA=wsignin1.0

  To find the version of ports, you can consult the HP manual (specifications).

  It will be useful.

• Sony Vaio E Series USB Ports works only sometimes

  I have a laptop Vaio Sony of SV1513KCXS and for some reason my USB 3.0 on the left side only works with devices let. Now, it is not broken... but my hard drive for example does that from time to time. My USB 2.0 all work effortlessly with the Toshiba 500 GB USB 3.0 Hard Drive. This is the weird part... If using a USB extention or a USB hub, it works every time. What is the cause? Also when I got the laptop HD 4 months she would transfer around 85-90 MB per second, but now it's a constant 36-38 mb a second not more not less. This could be the cause? Thank you.

  Tim-

  So I finally thought to it with hours of troubleshooting...

  First find/click Device manager

  Disc players

  Find the hard drive, that is my toshiba 500 GB HD and right click for the properties option.

  Tab 'political '.

  Check the "best performance."

  BOOM! Back to super high speed!

• I can't do all the USB ports work - Evesham Style II Mini Office in Windows XP

  I'm looking for the chipset & drivers for my grandaughters computer, AFAIK is drawn next to a reading Speccy.

  O/S

  Windows XP Pro 32-Bit

  CENTRAL PROCESSING UNIT

  Intel Pentium 4 2.80 GHz

  Motherboard

  Manufacturer - Eveshamvale.

  Vend. ATI chipset.

  Chipset model - ID5833.

  Model Southbridge - SB200

  The downloaded manual provides the following information

  Model = P4SBA

  = North Bridge chipset; SiS 651 - South Bridge SiS 962

  CPU = Supports Socket 478 - Supports 400/533 MHz FSB

  I'd appreciate any help possible, that someone can give me as well as the Office works currently can't do all the USB ports work, they worked until I had to change the hard disk, but do not have the installation diskettes or the drivers.

  Hi Graham,

  Thanks for posting your query in the Microsoft Community Forums.

  I understand from the description of the problem, the USB ports don't work on Windows 7 computer.

  I understand this must be frustrating, but don't worry, we're here to help and guide you in the right direction.

  Method 1

  Run this fix - it and check if it helps.

  Diagnose and automatically fix the Windows USB problems

  http://support.Microsoft.com/mats/Windows_USB_diagnostics

  Method 2

  Reinstall the USB controllers.

  This method addresses the steps where the USB driver currently loaded became unstable or corrupted.

  To remove and reinstall all USB controllers, follow these steps:

  (a) click Start, click run, type sysdm.cpl in the Open box, and then click OK.

  (b) click on the hardware tab.

  (c) click the Device Manager button.

  (d) expand Bus USB controllers.

  (e) right click on each device under the Bus USB controllers node and then click Uninstall to remove them one at a time.

  (f) restart the computer and reinstall the USB controllers.

  (g) connect the removable USB storage device and perform a test to ensure that the problem is solved.

  I suggest you to contact the computer manufacturer and download the latest chipset drivers and check if it helps.

  It will be useful.

  Let us know if you encounter problems with Windows in the future. We will be happy to help you.

• After a reboot, none of the usb ports work and USB problems-uninstalled USB Ports

  I just bought a Seagate external drive, but none of my usb ports work. I looked into it and followed what it says on the uninstall of my USB ports, bad move on my part. Now, after a reboot, no usb port works, I've tried all microsoft support said to do and nothing seems to work. I think I need to reinstall my usb root hub? Perhaps, but I can't seem to find anyway to do. Help, please!

  Hello

  Check the status of the device in Device Manager. Follow the steps for the same thing:

  a. click on start

  b. click Run, in the Run dialog box type devmgmt.msc

  c. in the Device Manager window, locate the USB key and expand the drive, double-click the sub element to check if an error message or error code is listed.

  If there is no error message highlight Bus USB controllers and then click Action select check for material changes.

  You can check the link below: advanced troubleshooting tips for General USB for Windows XP problems: http://support.microsoft.com/?kbid=310575

• My WD 3 USB drive does not work in the 3 USB Ports on my Lenovo W530 lap. But work in the regular ports.

  My WD 3 USB drive does not work in the 3 USB Ports on my Lenovo W530 lap. But work in the regular ports. What can I do to fix this?

  Do not use windows update for drivers.

  Update your drivers Lenovo support and see if that helps

  If the lenovo is new, you can contact Lenovo support to asertain why usb3 ports apparently do not work

• Peripheral storage but not with ethernet connection USB port work

  I usually connect my Mac Book Pro with ethernet using the USB port. It was working fine, but since a few weeks, it has stopped working. But the normal usb storage devices only works very well in this port. So, I tried to connect the ethernet to another USB port near the seizure of power, which seems to work very well. So, that means that the other USB port does not work properly. How can I fix? I use Mac Book Pro with the Version OS X El Capitan 10.11.4

  Try resetting the SMC reset management system (SCM) controller on your Mac - Apple Support

  Shouldn't use you a crush on Ethernet card instead of a USB adapter to Ethernet?

• Satellite L - a single USB port works

  Hello

  I've had this laptop for a few months and I could not do all the USB ports work, the system recognizes all the but work alone. If I check the system it says ports are working properly and that it has the latest driver but when I do anything, a mouse, USB KEY, connect headsets to listen nothing, only one of the ports to recognize hardware.

  Can someone help me?

  Hi alecarrill63,

  It would be interesting to know what laptop you have exactly and what operating system you are using.
  Can you post this important information?

  In your case, I will try to update the Web from Toshiba site chipset driver

  But theoretically, if only a single USB port works, the other ports may be defective and therefore, it would be necessary to replace the motherboard. :(

• USB ports work very strange on my new Satellite L650D-100

  Hello, toshiba loaptop users and professional!

  Last week, I bought toshiba L650D-100 with windows 7, 64 bit. Everything is good, but the USB ports work strange:

  USB mouse works ok at a port and does not to another. It is not in the windows Device Manager, but if I connect or disconnect the device, it sounds "ding".
  With USB storage there is another problem: it appears in Device Manager and it is shown that drivers are ok and the device are working properly, but if I try to open it in Explorer, it crashes, green progress bar grows and stops at the end. This problem appears in the two ports.

  If I reboot laptop with usb storage pluged, it can start to work correctly, but if I unplug and plug again the problem reappear.

  Usb storage and usb mice work well on another computer. I've updated the bios, but it does not help.

  Help, please. Maybe I should try to reinstall the chipset driver? If so, where could I get?

  Hey,.

  > This may somehow worry about supply management food or feeding issues?
  In my opinion it has nothing to do with the power supply, or you may notice that the problem appears not on battery mode?

  In my opinion, you should follow the instructsions posted by Akuma. Recovery facility will show you if it s a hardware or software problem. ;)

• Wireless USB mouse works only with Windows 7

  When I plug the usb antenna, it recognizes and installs successfully the mouse.  I then sync the two but the mouse does not work.  In the device, the mouse Manager is listed under "Human Interface Devices" as an "input USB device..."  I deleted and reinstalled, rebooted my computer and several other things but still cannot make it work...

  Any suggestions?

  Thank you
  SGT Cren

  I guess that your USB ports are in need of a better driver. It is probably in your drivers "chipset".

  Messages rating helps other users

  Mark L. Ferguson MS - MVP

• What is the difference between the rear USB ports and front USB ports?

  Why some USB equipment only works with the USB on a computer BACK and not the FRONT USB port?

  USB ports on the rear panel carry more voltage (voltage not exceeding) the USB headers on the front...

• HP 15-AC152TX: NO USB PORT WORK

  Recently I bought HP 15-ac152tx and intalled Windows 7 ultimate (64 bit) using the CD player, but none of the USB ports work. I had already installed "Intel USB 3.0 host controller driver" always without success.

  Please give me the right solution for it.

  Hello:

  For the USB3, download, unzip and run the file setup.exe from the link below...

  https://Downloadcenter.Intel.com/download/22824/USB-3-0-driver-Intel-USB-3-0-Extensible-host-controller-driver-for-Intel-8-9-100-series-and-C220-C610-chipset-family

  Ethernet:

  This package contains the Realtek driver local area network (LAN) that allows the NIC (NIC) Realtek chip in the notebook models that are running an operating system supported.

  File name: sp71268.exe

  Video controller:

  This package provides the driver that allows graphics Intel high definition (HD) in the notebook models that are running an operating system supported. If the video output high-definition multimedia interface (HDMI) is supported, this package also installs the HDMI Audio Driver.

  File name: sp72651.exe