| NVR will not boot. | Input power is not correct. |
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| Power connection is not correct. |
| Power switch button is damaged. |
| Program upgrade is wrong. |
| HDD malfunction or something wrong with HDD ribbon. |
| Seagate DB35.1, DB35.2，SV35 or Maxtor 17-g has compatibility problem. Please upgrade to the latest version to solve this problem. |
| Front panel error. |
| Main board is damaged. |
| NVR often automatically shuts down or stops running. | Input voltage is not stable or it is too low. |
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| HDD malfunction or something wrong wit the ribbon. |
| Button power is not enough. |
| Front video signal is not stable. |
| Working environment is too harsh, too much dust. |
| Hardware malfunction. |
| System is unable to detect hard drive. | HDD is broken. |
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| HDD ribbon is damaged. |
| HDD cable connection is loose. |
| Main board SATA port is broken. |
| Program is not compatible. Please upgrade to the latest version. |
| Brightness is 0. Please restore factory default setup. |
| Check your screen saver. |
| NVR hardware malfunctions. |
| HDD ribbon is damaged. |
| HDD is broken. |
| Upgraded program is not compatible. |
| The recorded file has been overwritten. |
| Record function has been disabled |
| Video quality setup is too low. |
| Program read error, bit data is too small. There is mosaic in the full screen. Please restart the NVR to solve this problem. |
| HDD data ribbon error. |
| HDD malfunction. |
| NVR hardware malfunctions. |
| Setup is not correct |
| Battery contact is not correct or voltage is too low. |
| Crystal is broken. |
| Front panel PTZ error |
| PTZ decoder setup, connection or installation is not correct. |
| Cable connection is not correct. |
| PTZ setup is not correct. |
| PTZ decoder and NVR protocol is not compatible. |
| PTZ decoder and NVR address is not compatible. |
| When there are several decoders, please add 120 Ohm between the PTZ decoder A/B cables furthest end to delete the reverberation or impedance matching. Otherwise the PTZ control is not stable. |
| The distance is too far. |
| For Windows 98 or Windows ME user, please update your system to Windows 2000 sp4. Or you can install client-end software of lower version. Please note right now, our NVR is not compatible with Windows VISTA control. |
| ActiveX control has been disabled. |
| No dx8.1 or higher. Please upgrade display card driver. |
| Network connection error. |
| Network setup error. |
| Password or user name is invalid. |
| Client-end is not compatible with NVR program. |
| Network fluency is not good. |
| Client-end resources are limit. |
| Current user has no right to monitor. |
| IP address conflict. |
| MAC address conflict. |
| PC or device network card is not good. |
| NVR serial port setup is not correct |
| Address is not correct |
| When there are several switchers, power supply is not enough. |
| Transmission distance is too far. |
| Alarm setup is not correct. |
| Alarm output has been open manually. |
| Input device error or connection is not correct. |
| Some program versions may have this problem. Please upgrade your system. |
| Alarm setup is not correct. |
| Alarm cable connection is not correct. |
| Alarm input signal is not correct. |
| There are two loops connect to one alarm device. |
| Camera quality is too low. Lens is dirty. Camera is installed against the light. Camera aperture setup is not correct. |
| HDD capacity is not enough. |
| HDD is damaged. |
| There is no media player. |
| No DXB8.1 or higher graphic acceleration software. |
| There is no DivX503Bundle.exe control when you play the file transformed to AVI via media player. |
| No DivX503Bundle.exe or ffdshow-2004 1012 .exe in Windows XP OS. |
| Please contact your local service engineer or our sales person for help. We can guide you to solve this problem. |
| IPC IP address is not right. |
| IPC port number is not right. |
| IPC account (user name/password) is not right. |
| IPC is offline. |
| Please cheek current resolution setup. If the current setup is 1920*1080, then you need to set the monitor resolution as 1920*1080 |
| Displayer is not in HDMI mode. |
| HDMI cable connection is not right. |
| The network bandwidth is not sufficient. The multiple-channel monitor operation needs at least 100M or higher. |
| Your PC resources are not sufficient. For 16-ch remote monitor operation, the PC shall have the following environment: Quad Core, 2G or higher memory, independent displayer, display card memory 256M or higher. |
| Please make sure the IPC has booted up. |
| IPC network connection is right and it is online |
| The device has connected to the too many IPC. It can not transmit the video. |
| Check the IPC port value and the time zone is the same as the NVR. |
| Make sure current network environment is stable. |
| Shut down the device and then reboot. When you reboot, please press the Fn button at the same time and then release after 5 seconds. You can restore NVR resolution to the default setup. |
| Please clear the Web controls and load again. |
| For 32-channel series product, the 9/16-window is using the sub stream. |
| For 4/8/16 series product, system is using the main stream no matter you are in what display mode. |
