If you have problems with the USB connection between your Samsung Galaxy S7 and the computer, then you should try to enable "USB debugging". The USB debugging is typically used only by developers because it provides more options for develop and test apps.
This is precisely the reason why you should enable in the case of connection problems with your PC the USB Debugging on the Samsung Galaxy S7. We will explain how to proceed. The USB debugging is hidden in the developer options. You can open them as follows:
From the home screen, navigate to: App Menu --> Settings --> Device Information.
On this page you see now the entry "build number". Now tap several times in quick succession on this to enable the developer mode. After about seven times tapping on the entry "build number", a message box with "developer mode enabled"appears at the bottom.
You can find the developer optionsnow in the settings-menu on your Samsung Galaxy S7. Tap on the entry and activate it by pressing the master controller. Then scroll down and select "USB debugging", to activate it on the Samsung Galaxy S7.
If you now connect your smartphone to the PC, this will be recognized without any problems.