Question about Acer Aspire SA80 (ASA80UC4603) PC Desktop

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Flash disk comes up as unknown devices

Hi please advise when ever i plug in a flash disk it comes up as an unknown device in the device manager . usb port detects other devices such as keyboards , mouse etc we tried 6 diff flash disks

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  • Anonymous Mar 20, 2009

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  • Jinan
    Jinan May 11, 2010

    Which operating system do you have? Windows XP or other? Do you have a driver CD or disk that came with your flash disk?

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  • 3 Answers

Try to download some new USB drivers, or update your old one. That may fix your problem.

Posted on Jan 06, 2010

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1 Answer

What can i do? my jetFlash V85 is unknown


Connect your flash drive to your computer using an available USB port.

If your flash drive is not recognized, you'll usually receive an error that says "USB Device Not Recognized."


Click "Start" > "Control Panel" and open the system configuration by double clicking the "System" icon.


Navigate to the "Hardware" tab and click the "Device Manager" button to open the Device Manager.


Click the "+" next to "Disk Drives" and locate your USB flash drive.

A question mark icon should be shown to the left of the label.


Right-click the device name and select "Uninstall."


Open the "Action" menu at the top of the Device Manager and select "Scan for hardware changes."


This will scan your PC for any new devices.


Because you uninstalled the flash drive, it will be detected as a new device and the drivers will be reinstalled.


Click "Start" > "My Computer" and look for your flash drive.


If this process was successful, your flash drive should now show up under My Computer as a storage disk.


If its listed as an unknown device

Then right click on your flash drive select rename


Hope this helps




Nov 08, 2012 | Electronics - Others

1 Answer

Not recognice by usb hard


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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My laptop with windows 7 all of a sudden cannot detect any usb? indication at device manager, usb host controller, there's an unknown device??can u help me what to do?


hi.
the Driver of USB Controller is deleted (by a virus or something like that)
and you need to install some drivers.
so put the motherboard driver Disk in your drive and try to update the unknown device in your Device manager
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Transcend 4gb pen drive not getting detected


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Seagate 250GB USB external harddrive was working now it is not. Cannot see it in Disk Management. In Device Manager, USB controllers the harddrive shows up as Unknown Device when I plug it in. In...


unplug seagae usb external h/d
Device manager>Under usb= ,uninstall the device.
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IBM T21 usb issue


u have to install drivers for usb connections.
i guess u have 98 version of windows. if u have windows 98 operating system u have to have install drivers for every USB devices.

feel free to ask me questions regarding this answer
chirag

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