If software methods fail, some versions of this hardware have a physical reset button: HIKVISION NVR PASSWORD RESET
Password Reset Experience
To reset the password for your Hikvision DS-7208HGHI-F1 DVR, you can use several official methods depending on your device's firmware and setup. 1. Using the "Forgot Password" Feature (Local GUI) reset password dvr hikvision ds7208hghif1