This commands will be help you to reset the admin password of your site.
# Provide you a login link
# Set the password for any user
drush upwd admin –password=”new password”
One more way :
cd php scripts/password-hash.sh 'drupal'
This will generate a hash for you, copy and paste in below queries.
update users set name='admin', pass='Hash generated from above command' where uid=1;