1. Download first Intel driver on your pc extract it and install it.
2. After installed, connect your phone to your pc using usb cable. Don't forget to enable debugging mode. To do that, go to settings>about>software information>build number (tap 7 times to enable developer option) then, go back to settings>developer options>usb debugging (enable/check it).
3. After update, Test for authorized connection between pc and phone. Go to downloaded rootz5kitkatv2 on your pc and click files>hold shift + right>choose open command window.