If the internal CMOS battery is dead, your system date might have reverted to default baselines like 2000-01-01 or 2012-11-20 . Use whatever date is physically visible on the screen.
If the default passwords don't work and you've forgotten your custom password, your most reliable option is a . This process is highly effective and works regardless of your software settings. dvr model ahb-8204 hnn super password
These methods are intended for legitimate owners who have lost access to their own security systems. If the internal CMOS battery is dead, your