Smartphone Questions? Ask A Smartphone Technician for Answers
When you connect the phone to the laptop, ensure the laptop is connected to the wall power supply.
Disconnect any other USB devices that are connected to the laptop.
Try using a different USB cord.
Connect the cord to a different USB port on the laptop.
You should see the phone appear as an external device.
If the above does not help, try connecting the phone to a different computer and let me know i it connects ok there.
Let me know if you would like remote assistance with this.