Problem with DVR access,login failed.

[m4xe 0]

Good day!I have problems with my dvr.On the remote dvr web page I can't access it,login failed.And i can't access my dvr from software which comes on cd with dvr. Router settings are ok.So I think problem is in ports configuration in DVR. But i can't access it to change ports in DVR. Only one thing can work,it's DVr reset to factory settings,bu i tried to remove battery and it's not working,network settings of dvr is not changed,couse it's webpage still working on the same adress.What to do?