I would remove the usb device and see if the problem goes away, if it doesn't you will need to open the computer. Once inside, you will see a serial wire coming from the suspected usb port to the motherboard, go to the motherboard and disconnect this jack. Hopefully your problem will go away, there may be a short in the port itself causing too much electrical current in the motherboard.
Put a known good device in that port...process of elimination!
One of the simplest ways is to use USB flesh drive, keyboard or mouse. Just connect to the port in question and try to use the device. If it works then the port is OK, otherwise you have found the port (or one of them) causing the problem.
Check that device manager recognizes the device with no errors or warnings.
Check that the usb device is functional in the Device Manager, Some USB devices don't appear in Device Manager use the utility program that came bundled with the device to check for errors. No. Plug the device into another USB port. If it does not work after you have plugged it into all USB ports on the computer then you know that your device is not working.
First try moving the device to another USB port!!! Check that the usb device is functional in the Device Manager. some USB devices don't appear in Device Manager use the utility program that came bundled with the device to check for errors.
Check it on another computer first. See if it's seen but not installed correctly. If you insert the device and there is no reaction from the device manager then perhaps there is an issue with the hardware. Otherwise it's likely a software problem on the system in question.
Plug two or three devices into that port if none of them work the port is defective.
You check if a usb device e.g. flash memory works in a good port. If it works, do that in the port you'd like to determine and see if your device is found.
You can buy USB network card, it will solve your problem.
A description if given of how to fix the problem of USB ports being disabled in this feature if you are experiencing USB connection problems.
Hook a mouse to it or see if a keyboard works. They do make a USB port checker, a little spendy, but Google/Yahoo it to find out.
Rather than using a USB sound card which can be awkward, I suggest that you go to Windows Help to try and sort out the problem as it is usually a software issue that is causing the distorted sound.