Password changes to something unknown every time I log in

I am moving my site over to a new server and my password no longer works.

I’ve gone through every method of changing it, but something strange keeps happening when I look at the wp_mysite_users table. I set the password with MD5, and the hash shows up in the table.

Then I got to mysite/wp-admin and log in. I get an error saying “You do not have sufficient permissions to access this page.”, I check the mysql table again, and the hash is different than what it just was. I’m completely confused by what could be causing this. Any ideas?