Question about Microsoft Windows XP Home Edition
Windows XP - After using an intermittent USB extension cord with a flash drive, when I connect any external storage device driectly to a USB port I get "USB Device not recognized" "One of the USB devices attached to this computer has malfunctioned." In Device Manager under USB it shows an unknown device. External hard drive does not show up in disk drives in device manager. I tried uninstalling all USB items in Dev Mgr, they reinstall but still get same message for flash and ext hard drive. Other devices work fine in the same USB ports. I tried System Restore. No luck. HELP!! Thanks!
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
Posted on Jul 24, 2010
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Posted on Jan 02, 2017
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A 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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