USB ports not recognized anymore

I have Vista.  USB ports and ports that accept cards camera no longer recognize them.  Scanner can be moved from USB port to the USB port and works but "Explorer" does not show that they exist.  How to recognize camera cards (mainly) as they did before?  Windows offers device (camera card) has a problem, but this isn't the case.  Card works so executed through camera (USB cable to the USB port) in two different cases with two different cameras.  Also plugged on the USP port scanner is not recognized by the function 'Explorer' but actually works very well.

Hello ghpots,

·         What happens when connect cards camera on USB ports, it installs the device drivers?

·         What are the changes that you made to your computer, since it has stopped working.

When you connect your devices to the USB ports, check the status of the device in the Device Manager. Check if you see a yellow fringe or exclamations in the Device Manager.

I suggest that you remove and then reinstall all USB controllers.

To remove and reinstall all USB controllers, follow these steps:

1. click on start, type Device Manager and open the Device Manager.

2 right-click every device under the Bus USB controllers node and then click on uninstall to remove them one at a time.

3. restart the computer and reinstall the USB controllers.

Plug in the removable USB storage device and test to make sure that the problem is solved.

Check the Device Manager to see if the unit under section USB or other devices. To do this, follow the procedures below:

Method 1:

1. click on Start, right click computerand select Properties .

2. click on Device Manager.

3. click on the (+) sign next to Universal Serial Bus controllers and next to the peripheral plus other section.

Look for the USB device under the Universal Serial Bus controllers, or under the other devices section.

4. If the unit is under Bus USB controllers or other devices, click on the reference to the 'unknown' device name, and then click Uninstall to remove the device.

5. close Device Manager, and then restart the computer.

6. If the USB device that has problems with software and it has not already been installed, install the software, now follow the planned manufacturer of the directives.

7 reconnect the USB device that had issues and test to see if it works.

The unit should now work correctly. Continue if the device name is not found in the Device Manager.

Method 2: There may be a problem with the USB port. Try connecting to a different USB port. If the USB device is displayed in Device Manager after plugging the cable in a different port, then uninstall and reinstall the software of USB device driver.

Method 3: Check the manufacturer of the device for support if the device is still unable to display.

Thank you
Irfan H, Engineer Support Microsoft Answers. Visit our Microsoft answers feedback Forum and let us know what you think.

Tags: Windows

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