You have an Android. Check. You have a computer. Check, check. You want to connect your Android to your computer to rip files off of it (or add files to it, like all those ringtones you spent hours designing). Check times three. You plug your phone in to your desktop or laptop’s USB port and...nothing happens.
source https://lifehacker.com/why-wont-windows-recognize-my-android-phone-1844869321