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Usb storage devices such as external drives, ipod, cameras, and storage have suddenly become unrecognised when plugging them in to direct USB port or USB hub. The broadband modem and printer still seem to work OK using the same ports but nothing relating to storage. I have an WinXP SP2 OS on my Fujitsu Siemens PC.

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Delete the usb root hubs by going to control panel-Device manager-click on usb controlers-delete usb root hubs and restart system..

Posted on Jun 27, 2008

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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...

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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


Nov 07, 2012 | Computers & Internet

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It cannot transfer pictures to Computer, unrecognised file format


TRANSFERRING PHOTOS TO COMPUTER
If your photos are stored on the memory card, then removethe memory card from the camera and insert it into an USB memory card reader.Connect this USB memory card reader and memory card into the USB port of yourworking computer. Your computer will see this as an USB Mass Storage Device oran external storage device; you can then open the folder on the memory card andcopy the photos to your computer.Memory card reader is a handy device and is inexpensive. Youcan copy photos from other cameras and you can also download photos off yourmemory card to someone else's computer without the need of installing anyprograms.

May 09, 2012 | Vivitar ViviCam 8320 Digital Camera

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Help! XP stopped recognizing my external hard drive. It has worked fine for two years and then suddenly: My Laptop no longer "dings" when I plug in the external hard drive. There are no unknown...


No question is silly dear, problems are there and we are in this site to help.

Yes, you mentioned that the said device works fine with your desktop, then it is probably not the problem with your device. You have also said that your tried formatting the os. Good.

Hope your pc, laptop and the memory device are disinfected with a good, licensed and updated antivirus.

Check, if Universal Serial Bus Controllers (corresponding to the nos. of total usb port present in the machine) are present and enabled both in the device manager and the bios as well and set to Hi-Speed if it is Full-Speed.

Well, have you tried formatting the memory stick/device? Format it and see if it works.

Next, please change the usb connectivity cable using/attached to the device and see.

Another thing while connecting an external storage device like ext-hdd. The external usb storage devices that gets connected with a usb cable, in some rare cases needs to be connected as a usb-master or usb-slave [you can see many external usb drives comes with a splitted or dual usb port connector cable, this is either for connecting two usb device or to connect as master when used as a single drive], therefore use such cable to connect and use alternated ports, and see which works.

Now, if all above fails, it then might be the problem with your external drive, i guess.

Best to seek help of your system admin/vendor.

Oct 16, 2011 | Microsoft Windows XP Professional

1 Answer

Hello, I plugged in my iomega 1tb desktop hard drive storage device and the drive does not appear in my drive or computer. I do have the new hardware 'sound' that comes up but I dont have the drive show up...


Iomega 1TB Desktop Hard Drive is a dedicated usb 2.0 plug and play external storage device that has an ability to transfer at 480Mbits/second. having these large capacity storage drive needs a fast connection and additional power source to make sure to run the external unit system properly.

just make sure both power and data cables are properly plugged and connected respectively. if you are using it with a desktop, please always plug your usb connection from the Iomega 1TB external drive to the rear USB port in line where you built-in LAN is.do not plug it in the frontload ports. some motherboard manufacturers uses usb 1 and/or 1.1 only for frontload desktop casing provision.

thank you.

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LG GSA E 40 L External dvd writer not recognised


you may be having conflicts with usb devices. try temporarily removing all unnecessary devices from the usb ports. unplug and then plug the drive back in. you could try another port. if all ports are in use, then unplug another device, like the mouse and plug in to that port, then plug the mouse into the writers port. i had a similar problem with a wireless usb lan that stopped another device from being recognised. when i removed the lan and replugged the unrecognised device, windows recognised it. i obviously had to use the wireless lan, so i swapped that with the mouse and it worked.

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External HD not recognizing USB ports as being Hi-speed ports


I have the same issue. I have 4 Simpletech Signature 250GB drives. They all worked fine at first. After about six months two of them started connecting at USB 1 speeds. It occurs on 4 different computers!!! The post about it being the computer assumes is wrong. How can it work fine for six months and then suddenly change. Also it occurs on different computers. I have submitted a tech support request with simpletech and will post the results.

Jun 14, 2009 | SimpleTech Signature Mini 160GB External...

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Ipod ready/USB problem


The USB port is to be used with USB mass storage devices like flash drives, thumbdrive or external hard drives. The IPod's USB connection is not seen as a mass storage device it is proprietary. You need the iPod connection kit, part number KS-PD100 to connect your iPod to the deck.

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Usb kdc-x890 IPOD


The 890 doesn't support iPod control via USB. You can only read plain data storage devices on the USB port, such as a flash drive or portable hard drive. When you plug the iPod in (to a PC or the 890), it doesn't show up as a plain file storage device. Some of the newer Kenwoods do offer direct iPod control via USB. These ones have more "smarts" and are able to properly talk to the iPod and access its music. For the older models, you'll need to buy the special iPod interface, which accesses the iPod like a CD changer.

Mar 20, 2008 | Kenwood KDC-X890 CD Player

1 Answer

Unrecognised external drive


Hello Sir,

Here are a few things to try. If you have access to a secondary PC or laptop, try connecting your drive to it using a different USB cable. Also try unplugging your drive from the power outlet for a few seconds and then connecting it again. If it?s still not being recognized, Maxtor has a free utility called PowerMax (available at www.maxtor.com) that lets you run various tests on your drive till it identifies the problem.
Plus another thing to look at is if whether or not plug and play is disabled in the system Bio's. Course the easiest way to see if that is the case is to plug something else like a pen drive into the USB port and see if it is even working. It may also be that the USB port is not working or is disabled, or better yet your system has only a USB 1.0 port. In which the pen drive may work but it is not enough for the Ext. Hard Drive which requires USB 2.0.
But the remedy is to first try the drivers and software, then check to see in your hardware manager what USB you have, then if plug and play is enabled in the BIO's as well as what the USB setting is in the Bio's, and last but not least add a USB 2.0 PCI expansion card and try that.

Plz forget to comment....
Good luck!

Cherrs!!!!

Jan 08, 2008 | Computers & Internet

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