To change password for mysql user proceed with the steps given below.
Step 1: Login to Control panel.
Step 2: In search box, enter as database and hit enter. In the search result, select MySQL Databases under Databases.
Step 3: Click Set Password option near the respective user for which you want to change the password.
Step 4: Under Set MySQL User Password, enter new "Password" and retype the same passwordin "Password (Again)" field. Click Change Password.