Forgotten password :/ How can I reset my H.264 Network DVR to factory settings?

Hello , I need help with my H.264 Network DVR Model : TV-7216H . I forgot my old password and I dont know how can I set factory settings. Im tried unplug the CMOS battery and wait 24 hours , but it isnt work. Can u halp me with this problem ?
Asked Jul 06, 2013
Answered Aug 26, 2014
yes. can you explain how to reset it? I have the same issue my ex set it up & I don't know it.

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.