cctv drv6004 Factory reset or Password reset ?

[papi83dm 0]

Hello,

 

I enabled my DVR to view it thru the web and I had the admin password disabled. A few days ago I'm not able to get into the menu of the DVR as it prompts me for a username and password. I think someone logged in to my DVR a set a password

 

I have this model number of my dvr DVR6004SE.

 

Is there a way to do a hard reset or reset the admin password?