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My usb port does not detect any external device attached to it. what can be the problem..do i have to install the driver cd again?

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  • Computers & ... Master
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Try going to Device Manager and check if there is any yellow exclamation icon. To go to Device Manager, click Start>right click on My Computer>scroll down to Properties>click on Hardware tab> Device Manager. Click on the + symbol next to USB controllers. Just check it.

Posted on Sep 05, 2009

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Posted on Jan 02, 2017

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My hddr640e04xr is not detected


You don't need to have a driver for your external HDD to work.

You have three possible problems:

1. USB port (software problem) - outdated USB driver or with bugs

Try updating them via the device manager. Or you can try uinstalling it then scan for hardware changes. It will automatically reinstall.

2. USB port (hardware problem) - try a different USB port.

3. HDD defective - You may want to try connecting it to a different computer. If it doesn't work in a different computer then it should be defective.

David

Feb 20, 2013 | Computers & Internet

Tip

How to connect a barcode scanner to your computer


<p>If you run a business, you probably need a barcode scanner to help control the items in and out of your iTunes. It is also possible to bar code reader to a computer at home. These devices connect through a USB port like most other external hardware. <br /> <p><br /> <p>1. Connect the barcode scanner to your computer via the USB port. A window showing the computer has detected a new piece of hardware. <br /> <p><br /> <p>2. Insert the CD driver installation. Wait until the installation wizard. <br /> <p><br /> <p>3. Follow the instructions to complete the installation. Remove the driver CD and replace it with a software CD is provided. <br />

on Jun 26, 2011 | Computers & Internet

1 Answer

External drive not picked up on computer


External hard drives not only provide additional storage space on a computer system but also allow data to be conveniently transported from one computer to another.


These drives typically plug right in to a port on the computer and function without any additional setup; however, if you are running into trouble where your external hard drive is not being detected, you must troubleshoot the situation to determine why the drive appears to be missing.


Check the USB connection running from the hard drive to your computer.

If the USB cable is not seated securely in the port, the computer will not detect the external drive.


Disconnect the USB cable from the computer and plug it into a different USB port. Occasionally, a USB port will fail to function with some hardware and changing the USB connection may correct this issue.


Switch from a USB to a Firewire cable connection, if possible.

The USB port on the hard drive may have died; if so, changing to a Firewire connection will resolve this issue.


Install the driver for the external device from the installation disc provided with the product. Older computer systems may require you to manually install this driver.


After inserting the installation CD, follow the prompts from the installation wizard to install the driver on your computer.


Restart the computer.

If you connected the external drive while the computer is powered down, it may not recognize the device when you turn on the computer.


After restarting the computer, connect the external drive to the system.

The drive should now be detected by your operating system.


Connect the external hard drive to a power source and then plug it into your PC computer using a USB or Firewire cable.


Log on to your PC computer using an account with administrative privileges.

Open the Start menu and click on the "Control Panel" icon.


Open the "Administrative Tools" folder and then double-click on the "Computer Management" icon.


Select "Disk Management" from the list of options on left side of the window.


Right-click on the drive you want your computer to recognize and select "Change Drive Letter and Paths."


Select a drive letter for the external hard drive to be recognized as and click "OK."

The drive will now appear in My Computer.


Hope this helps.

Nov 22, 2012 | Samsung G3 Station Desktop External Drive...

1 Answer

Driver not detected


is it the driver or the extenal hard drive thts not detected

click start control panel administrive tools ,computer management ,device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red x
right click to reinstall drivers or
if you can see your usb but its not working
ports(com&lpt)right click update driver
sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable,
just replace the cable of the hard disk, when you plugged the external disk drive you got that windows could recognize the USB device change the cable everything should work fine again,

check the USB leads that attach to the motherboard usually red-white-green-black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems also make sure the computers Ram and Cmos battery are securely seated
if this fails to fix the problem

you might have to install a usb 2 or 3 card they are cheap and easy to install you can buy these on Ebay very cheap
hope this helps

Sep 27, 2011 | SimpleTech SimpleDrive Pininfarina 320GB...

2 Answers

Hi i have this problem with my dell latitude d400,i did some installations some time ago and up till now i have not been able to use usb device on it,my external dock bay i cant use it neither so pls help...


Do you still have this problem if you boot into safe mode? If not, then there is a problem with one of your programs interfering with usb drivers.
If it does still happen in safe mode, then you may need to re-install your drivers. To do this, boot up normally, go to Start/control Panel/System/Hardware/Device Manager. Find your USB section, and right-click the USB Root hubs, and uninstall them. Then reboot, and windows will then detect the usb ports, and reinstall the necessary drivers for proper operation.
Hope that helps.
Cheers from NZ

May 27, 2011 | Dell Inspiron 9100 XPS Latitude D400...

2 Answers

My wd external hard drive lits up when you plug it in a usb port but it doesnt read on the computer problems


click start control panel administrive tools ,computer management ,device manager look through all of your devices if you see a yellow question mark?or exclamation mark ! or red x
right click to reinstall drivers or
if you can see your usb but its not working
ports(com&lpt)right click update driver
make sure the lead/s that attach to this drive have a secure seating and are not bad/faulty the light on only tells that its getting power it might not be getting enough power you might test the lead/s or
just replace the cable of the hard disk, when you plugged the external disk drive you got that windows could recognize the USB device change the cable everything should work fine again, sometimes the wires inside the cable will be damaged due to bending or stretching or placing heavy equipment upon the cable,
check the USB leads that attach to the motherboard usually red-white-green-black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems
hope this helps

May 22, 2011 | Western Digital 320GB MyBook External USB...

3 Answers

I want to download drivers for Sony CRX2100u


Hello there;
The best way to download drivers for your sony cd-rw burner should be going there official website however that driver comes already with your operating system, that means its plug and play. But if your looking for software to have something to use for burning or writing CD then you might have to have a burning software like NERO.
Have a nice day...

Mar 31, 2011 | Sony CRX 2100U CD-RW Burner

4 Answers

Cannot install TASCAM US 144 driver


Go to device manager and verify that the ports are powered. Windows has as a default that if no USB is detected after a prescribed time, that they be powered down. (Without notification, I might add!) I would then change the parameters to where they are manually turned off and on to help the situation...accordianman

Apr 02, 2008 | Tascam US-144 Sound Card

1 Answer

My sony VGN N220E does not detect external devices


Try reinstalling your usb ports.

1. goto desktop, right click on my computer and press manage.
2. goto the device manager, find the usb devices / ports.
3. Make sure you are useing a ps2 mouse / keyboard since if your mouse/keyboard is connected to usb they will stop working untill your pc is restarted and the devices are reinstalled.
4. Uninstall all usb devices.
5. after all usb devices are uninstalled reboot the pc.

If the problem is with your drivers ( your pc detects the mp3 player but no drivers found) Download the newest drivers for your product and operateing system from the vendors website.

Nov 30, 2007 | Computers & Internet

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