1. If you selected the forget password option - check your spam folder for the link to do so.
2. If you already changed the password but you're trying to login with the new password you set and your still getting the error, email amazon support ( yes they will get back to you in 24 hours, sometimes they will contact you in less time).
3. Try the password option in another browser.
Security precautions:
- Run an antivirus program on your computer to make sure your computer has no spyware on it
- If you are using Google Chrome - Go into your settings > more advanced settings > passwords ( make sure you erase and uncheck the option to keep your passwords )
- Clear your cache and cookies
- Change the passwords to any major sites that you use - get old school and write it down.