find cmd icon, right click, run as administrator

-- my.ini
[mysqld]
skip-grant-tables
character_set_server=utf8
basedir=C:\mk\program\mysql-5.7.14-winx64
datadir=C:\mk\program\mysql-5.7.14-winx64\data

cd E:\mysql\mysql-5.7.11-winx64
mkdir data
cd E:\mysql\mysql-5.7.11-winx64\bin
mysqld –initialize
net start mysql
mysqld install
mysql
update mysql.user set authentication_string=password('123456') where user='root' and Host = 'localhost';
flush privileges;
quit;

-- my.ini
# skip-grant-tables

net stop mysql
net start mysql

mysql -uroot -p
SET PASSWORD = PASSWORD('123456');
quit;


refer: http://blog.csdn.net/wei389083222/article/details/50923898