1. Open your computer terminal

  • ctl + alt + T(command + space bar on mac) 
  • search terminal 
  • click on the terminal application 
  • you should see something like this
     

2. Now copy and paste the following 

sudo su -
wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | apt-key add - && apt-get update && apt-get upgrade
apt-get --reinstall install google-chrome-stable

3. Press enter

4. Reboot your computer.