A friend gave me her DVR 5880 and 3 cameras.  I was excited to put them up today but realized that there is a password on the device.  Friend does not remember it.  I have figured out how to change the password but I can't get to the software on the DVR.  DVR is connected to the internet via cat 5 and to my computer via HDMI cable.  VMS software finds the DVR but understatus is says password error.  I need to get to the DVR software. I can't figure it out. any thoughts?

Thank you in advance!