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Resolving intermittent Windows USB device issues

PROBLEM: USB Devices (Both internal and external) work intermittently.
DISCUSSION: Issue is caused by Windows power management disabling the USB Root Hub to save power (This option is on BY DEFAULT in all Windows installations)
RESOLUTION: Open Device Manager, scroll down to the USB Root Hubs Listings (There may be as few as two most I've seen is 7) Right click each hub, select Properties on the drop down menu, then click the POWER MANAGEMENT tab. There you will find a check box to allow windows to turn off this device to save power. Uncheck the box and close the window, repeat on remaining USB Root Hubs, then reboot.
This will resolve most intermittent USB device issues.

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My Windows 7 cannot recognize my Sata/usb connector


USB hard drive is a portable external storage device that works just like a conventional hard drive. The device is simply plugged into a USB port on your computer as you would connect a flash drive. Unlike a flash drive, however, a USB hard drive can store a much larger amount of data. If your computer will not recognize your USB hard drive, you can try troubleshooting steps to resolve the problem.

Plug one end of the USB cable into the port on your hard drive and plug the other end into the USB port of your computer. Ensure that both ends of the cable are connected securely. Open "My Computer" (Windows XP) or "Computer" (Windows Vista/7). The USB device should be listed as "removable disk" once it is plugged into the computer. If it is not listed among the available drives on your computer, proceed to the next step. Ensure that the data cable is working properly. Try another USB cable if you have one available. Disconnect all other USB devices from the computer as they may interfere with the operating system detecting the external hard drive. Reboot the computer if the USB hard drive is still not recognized. Plug the USB cable into another USB port and check to see if the device is detected. If you are using a USB hub, remove the device and plug the external hard drive directly into a USB port. If the computer still fails to recognize the device, the external hard drive itself may be experiencing a hardware problem. Check the status of the hard drive in the "Device Manager" window. Under Windows XP, right click "My Computer" and select "Device Manager." For Windows Vista and Windows 7, click the "Windows" button in the lower left corner of the screen, then type "Computer Management" in the search bar and press "Enter." Select "Device Manager" in the "Computer Management" window. In the Device Manager window, click the "+" sign that appears beside "Disk Drives." If the external drive is not listed, click "Other Devices" in the Device Manager window and see if an "Unknown Device" appears. The external hard drive may have been detected but the device is not working properly. If it is still under warranty, take the device to the computer store where it was purchased to have it repaired or replaced. Hope this helps.

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Jan 04, 2013 | Apricorn SATA Wire 3.0 - storage...

1 Answer

All External storage devices "USB Device Not Recognized"


Dear Sir,madam
You have to do some steps about fixing this problem :
1: Go to Device manager by right click on my computer then manage and then device manager.
2: Go to universal serial bus controller and export it.
3: in each USB root hub right click and then properties.
4: In properties screen select power management tab and unmark on " allow the computer to turn off this device to save power ".
5: After finishing this steps in each USB root hun restart your computer and then done

Jul 24, 2010 | Microsoft Windows XP Home Edition

1 Answer

USB Ports are not working


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A USB device, such as a camera, scanner, or printer, loses its connection and stops working unexpectedly. The device may appear to work fine when Windows first starts up but later stops working. Use the steps in this document to resolve this issue. Disable power management on the USB hub To preserve power, Microsoft Window XP tries to disable USB when a device is not used. Under certain circumstances this function does not work and may cause USB devices to fail to respond when called. To resolve this issue, disable power management on the USB hub by doing the following:
  1. Click Start , and right-click My Computer .
  2. Click Properties , then click Hardware .
  3. Click Device Manager .
  4. Double-click the Universal Serial Bus Controllers branch to expand it.
  5. Right-click USB Root Hub , and then click Properties .
  6. Click Power Management .
  7. Deselect Allow the computer to turn off this device to save power .
  8. Repeat Steps 5 through 7 for each USB Root Hub.
  9. Click OK , and close Device Manager .
If this doesn't help download everesthome. Run the program click on the chipsets and google the northbridge for updates.

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May 01, 2008 | HP Pavilion dv1000 Notebook

1 Answer

usb ports


Reinstall your USB drivers:
Navigate to Device manager, find a branch named "USB Controllers" or similar
Right click the one thats the problem (or all of them if you dont know which), select Uninstall
Reboot your machine and windows will autodetect the USBs and reinstall their drivers.
that should work, if not let me know,
thanks.
Check the BIOS and see if they are enabled...
when you start up1.gif your laptop. it will tell you what to press to run setup
Disable power management on the USB hub To preserve power, Microsoft1.gif Window XP tries to disable USB when a device is not used. Under certain circumstances this function does not work and may cause USB devices to fail to respond when called. To resolve this issue, disable power management on the USB hub by doing the following:
  1. Click Start , and right-click My Computer .
  2. Click Properties , then click Hardware .
  3. Click Device Manager .
  4. Double-click the Universal Serial Bus Controllers branch to expand it.
  5. Right-click USB Root Hub , and then click Properties .
  6. Click Power Management .
  7. Deselect Allow the computer to turn off this device to save power .
  8. Repeat Steps 5 through 7 for each USB Root Hub.
  9. Click OK , and close Device Manager .

Jan 17, 2008 | Acer Aspire 3100-1405 Notebook

1 Answer

usb cannot recognized


Reinstall your USB drivers:
Navigate to Device manager, find a branch named "USB Controllers" or similar
Right click the one thats the problem (or all of them if you dont know which), select Uninstall
Reboot your machine and windows will autodetect the USBs and reinstall their drivers

Check the BIOS and see if they are enabled...

Disable power management on the USB hub To preserve power, Microsoft1.gif Window XP tries to disable USB when a device is not used. Under certain circumstances this function does not work and may cause USB devices to fail to respond when called. To resolve this issue, disable power management on the USB hub by doing the following:
  1. Click Start , and right-click My Computer .
  2. Click Properties , then click Hardware .
  3. Click Device Manager .
  4. Double-click the Universal Serial Bus Controllers branch to expand it.
  5. Right-click USB Root Hub , and then click Properties .
  6. Click Power Management .
  7. Deselect Allow the computer to turn off this device to save power .
  8. Repeat Steps 5 through 7 for each USB Root Hub.
  9. Click OK , and close Device Manager .

Jan 17, 2008 | ASUS M2N-MX Motherboard

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