USB ISSUES AND SOLUTIONS

The USB ports have increasingly become popular today especially with new computers, reason because they support plug and play capabilities. USB ports support and read all USB supported devices like Flash disks, Cameras, mouse, the keyboard, printers, scanners and many others to come, therefore the USB ports are very important on your computer and that why manufacturers have increased their number on the computer. Today we discuss problems associated with USB ports and how to solve them.

USB port may stop working after you remove or insert a USB device

Problem description

If you quickly and repeatedly insert and remove a USB device, the USB port may s...

If you quickly and repeatedly insert and remove a USB device, the USB port may stop responding. When the port is in this state, it no longer recognizes any USB device, and the USB device will not work.

Prerequisites

You must use administrative credentials to log on to Windows to perform some of...

You must use administrative credentials to log on to Windows to perform some of the troubleshooting methods that are listed in this article. If this is your personal computer, you are likely already logged on with an administrator account. If this is a computer that is part of a network at work, you might have to ask the system administrator for help. To verify that you are logged on to Windows with a user account that has administrative credentials, visit the following Microsoft Web site:

Resolution

To fix this problem, use the following methods in the order in which they are li...

To fix this problem, use the following methods in the order in which they are listed. After each method, check the USB device to see whether the problem is fixed. If the problem is not fixed, try the next method.

This article also includes a workaround that you can try if these methods do not work.

Method 1: Use Device Manager to scan for hardware changes

Use Device Manager to scan for hardware changes. After your computer scans for hardware changes, it might recognize the USB device that is connected to the USB port so that you can use the device.

To scan for hardware changes, follow these steps:

1. Click Start, and then click Run.
   
   Note If you are running Windows Vista, click Start, and then use the Start Search box.
2. Type devmgmt.msc, and then click OK. Device Manager opens.
3. In Device Manager, click your computer so that it is highlighted.
4. Click Action, and then click Scan for hardware changes.
5. Check the USB device to see whether it is working.

If scanning for hardware changes fixed the problem, you are finished. If this method did not fix the problem, go to Method 2.

Method 2: Restart the computer

If scanning for new hardware did not fix the problem, try restarting the computer. After the computer has restarted, check the USB device to see whether it is working.

If restarting the computer fixed the problem, you are finished. If this method did not fix the problem, go to Method 3.

Method 3: Disable and re-enable the USB controller

Use Device Manager to disable and re-enable all the USB controllers. This lets the controllers recover the USB port from its unresponsive condition. The USB controllers represent the USB ports in Device Manager. If you are not comfortable with advanced troubleshooting, try the steps in the "Workaround" section.

To disable and re-enable the USB controllers, follow these steps:

1. Click Start, and then click Run.
   
   Note If you are running Windows Vista, click Start, and then use the Start Search box.
2. Type devmgmt.msc, and then click OK. Device Manager opens.
3. Expand Universal Serial Bus controllers.
   
   Note You might have to scroll down the list to find this item.
4. Right-click the first USB controller under Universal Serial Bus controllers, and then click Uninstall to remove it.
5. Repeat step 4 for each USB controller that is listed under Universal Serial Bus controllers.
6. Restart the computer. After the computer starts, Windows will automatically scan for hardware changes and reinstall all the USB controllers that you uninstalled.
7. Check the USB device to see whether it is working.

If the USB port recognizes the device and if you can use the device, you are finished.

If this method fixed the problem, you are finished. If this method did not fix the problem, go to the "Workaround" section.

Workaround

If none of these methods worked for you, you can disable the Selective Suspend f...

If none of these methods worked for you, you can disable the Selective Suspend feature. However, be aware that when the Selective Suspend feature is disabled, all USB host controller drivers (and therefore all USB ports and connected USB devices) in the system are affected. Therefore, your computer cannot suspend any USB devices that are connected to it, and the USB devices can continue to use power while connected to the computer. Additionally, the Allow the computer to turn off this device to save power check box does not appear on the Power Management tab for the USB Root Hub.

Now one of the working methods that i have offen used is to remove all USB controllers and then restart the computer, they automatically reinstall and solve the problem this is how i do it.

Remove and reinstall all USB controllers

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

1. Click Start, click Run, type sysdm.cpl in the Open box, and then click OK.
2. Click the Hardware tab.
3. Click the Device Manager button.
4. Expand Universal Serial Bus controllers.
5. Right-click every device under the Universal Serial Bus controllers node, and then click Uninstall to remove them one at a time.
6. Restart the computer, and then reinstall the USB controllers.
7. Plug in the removable USB storage device, and then test to make sure that the issue is resolved.

With these methods i hope you will solve your USB issues and enjoy hassle free computing. If your USB problems persist then call our experts of 0752258605 wishing you great time. 

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