cuky21

Good morning, I forgot the password of my 4ch DVR, does anyone know how to reset it? I've searched in the forum, and google, but have not found one similar to mine. I took off the internal battery and left it unplugged for over a week, with no success. It only kept the date of the day I unplugged it, but didn't erase the password. The original user was admin, without a password. Thank you very much for your help.