I can't log into my admin panel

Question

I installed a plugin that compresses images, then I deleted it because it didn't work. Then, I go to log into my admin panel the next day and it says

invalid username or password

Answer 1

you can login to phpmyadmin, search for "admin_user" field & click on that and choose MD5 and give new password & save it.

step 1 : Login to Phpmyadmin & select proper database

step 2: : search for admin_user

step 3 : click on admin_user

step 4 : select MD5 from dropdown and type new password

step 5 : click on "Go" button

you can find detailed explaination here .

Answer 2

update the password by running the following sql command from the database

UPDATE `admin_user` SET `password` = MD5('yournewpassword') WHERE `username` = 'adminusername';