|What do you mean it hasn't worked? You couldn't install the driver, or it didn't help?|
You need to be more specific with your answers.
Not always only today? Is that regarding the phone?
From above "Go to Device manager and look for any hardware that has a yellow or red exclamation mark by it. If you find something like that, remove the listing from device manager and reboot. Windows should install the hardware at the reboot."
Not sure if you responded to that or not.