Put a known good device in that port...process of elimination!
Check that device manager recognizes the device with no errors or warnings.
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 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.
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.
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.
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.
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Your Anti-lock Brake System (ABS) has a problem and is disabled. Until the problem is fixed the light will remain on. You still have your regular brakes and will stop you but they can lock up causing you to skid if your not careful. Have your garage plug in their scanning device to read the trouble codes so they can determine the problem and make repairs. Once repaired the light will go off on its own.
Plug two or three devices into that port if none of them work the port is defective.
A fuse is the simplest protective device for over current in an electric circuit.
Do a voltage test. Start at one end of the circuit and progress along device by device. If there is voltage on the down stream side of the device move on to the next. If there is no voltage on the down stream side of the device then go up stream of the device. If you have voltage there then the current device that you are at is the problem causing an open or broken circuit.
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