Ay baka sa installation path yan sir. Try these steps baka gumana po.
Control Panel > System > Advanced System Settings > Environment Variables > System Variables > Click 'New' Button
Hanapin mo file location na pinag installan mo ng VS which is located at System drive (C. Then look for its folder named "bin". Pag naclick mo na folder na yan, copy the whole path then paste it dun sa 'New'.