Driver wifi install Linuxmint

You can fix wifi problems using two methods:
1. Either connect to the internet via wired connection and run this command:

sudo apt-get update && sudo apt-get upgrade

Then reboot your system.
2. Or use the following commands:

sudo apt-get install linux linux-headers-generic kernel-package
sudo apt-get install --reinstall bcmwl* firmware-b43-lpphy-installer b43-fwcutter

Finally, reboot your system.
If that didn’t help, try these commands:

sudo apt-get remove bcmwl-kernel-source
sudo apt-get install firmware-b43-installer b43-fwcutter
sudo reboot