It's tough to find the exact reasons of a port turning on or off automatically
. Computer port problems can lead to printing process failure, flawed network connection and access to data on memory sticks attached to your computer. It's very irritating at times when you are unable to access internet or even print a page. Most of these problems are caused by mutual conflicts of an installed program or operating system updates with an additional software installation on your computer. You will have to update the drivers of problematic port:
For Vista: Click on My Computer and right click on C drive. Select 'Properties' option from the menu after right clicking. Now you need to click on the 'Hardware' tab in Properties window. List of ports will be displayed on screen. You can check the status of a port concerned with a specific device by double clicking on it. If the message 'device is working properly' is displayed, move on to the next one. A problematic port will display the message in device status. Click on 'Driver' tab, followed by 'Update Driver.' Click on 'Ok' button to confirm the changes. Check the device status to see if concerned port is working. Repeat the steps mentioned above if the problem persists.
For XP: Open the properties window of C drive by selecting 'Properties' option from right click menu. Press 'Device Manager' button followed by 'Universal Serial Bus Controller.' Find out the port that your computer is having trouble with. Look for 'PCI' or 'Bridge' in front of a port to identify them quickly. Update this device from Properties window of the port that opens up by clicking on 'Properties' option of right click menu. Restart your computer now. If the problem continues even after restarting your computer, repeat all the steps once again.