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In the course of use, it is inevitable that many sudden failures such as crashes will be encountered. So, what are the hard disk recorder troubleshooting solutions?
1. Question: What is the cause of jitter in the monitor display?
answer:
This situation is generally caused by the display refresh rate setting is too low, enter the "Display Properties" click "Settings", select "Advanced", and then select "Monitor", adjust the new frequency to 75HZ, determine the exit can be resolved This problem.
2. Question: Why does the monitor appear with a screen saver or a black screen when the monitor is turned on for a while?
answer:
This situation is caused by not having to cancel the screen saver or improper power management settings. The solution is to exit from the monitoring system to the WINDOWS operating system interface, right-click on the interface, select "Properties", select the screen protection in the appearing tab, select (none) to cancel the screen saver. Then click on the settings button in the lower right corner, select "Always open" in the power scheme, the system waits to select "never", close the monitor and select "never", "close the hard disk" where "never", and finally click "OK" can be.
3. Question: What is the reason why the digital hard disk recorder image shows only the image without the operation button or the screen is not full of the entire screen?
answer:
Under normal circumstances, the display resolution setting does not meet the requirements, set the desktop resolution to 1024*768, and change the small font to a large font.
4. Question: How should the HD video host be partitioned?
answer:
System main hard disk:
1) Create primary partition C: (2 to 3GB) (Operating system application software.)
2) Create an extended partition (100% of the remaining hard disk)
3) create a logical partition in the extended partition D: (usually allocated about 4GB, mainly stored application backup and some video data)
4) Create logical partition E under the extended partition: (remaining hard disk space) (video data)
5. Why does the monitor have a screen saver or a black screen when the monitor is turned on for a while?
After exiting to the operating system interface, right-click on the interface, select Properties, select Screen Saver in the tab that appears, and select (none) to deactivate the screen saver. Then click the Settings button in the lower right corner, select "Always open" in the power scheme, the system will wait to select "Never", close the monitor and select "never", close the hard disk and select "never" and then confirm. 
6, why no boot?
Make sure the chassis and monitor are properly connected and the power is connected and turned on. In the process of transportation and moving, the body may loosen the internal card accessories. It is better to open the chassis before starting the machine and confirm that the components are plugged in and then turned on. If the main board self-checking is abnormal during startup (normally, the keyboard indicator LED flashes once and the host buzzer emits a “beep†sound), please turn off the power and check whether the CPU board and the video card are fully inserted, and remove the board. Plug in again. If you press the power switch and the CPU fan does not turn and the panel power indicator does not light, check that the power supply is connected correctly.
7. What kind of operating system can the hard disk video card work under?
Hard disk video card can be used above Windows/2000, support PNP function.
8. Why does the system crash? How to restore?
If the improper setting of windows or some other software failure causes the system to work abnormally, system crashes will occur. The following methods can be used to recover the system:
First: Windows registry method repair system. For example, if you do not open the monitor or the monitor is connected abnormally when you start the system for a certain time, the system cannot be normally accessed when the system restarts. You can use the following steps to repair it.
Restart, hold down the F8 key during startup, select “Command Promptonly†in the boot mode selection menu, and after booting, type the following command line: scanreg/restore Select the date of the most recent system work to restore.
Second: When using the recovery registry can not solve the problem, you can use Ghost to restore the system, provided that you have used the Ghost backup system. Use method is to start (start with the hard disk or start the boot disk WIN98) to DOS state, run Ghost.exe, follow the prompts to complete the system recovery.
9. What should I do if there is no image display?
One reason: Due to incompatibility of the graphics card, the Direct Draw test can be used. If the test passes, this is not the reason.
Cause two: The PCI interface is not in good contact. You can switch to a PCI slot test.
Cause three: If the card is damaged, you can consider changing the card test.
10. Audio and video card driver installation instructions.
The driver for the video card cannot be installed in more than one. Only check the complete number of drivers in safe mode.
Example: You have 8 cards plugged into the motherboard. You can only install 8 drivers. You should check the number of audio and video card drivers in 'safe mode'. If the video card driver is more than the number of installed video cards, the system sometimes does not work properly.
Note: Four-way real-time card is equivalent to four independent cards, four drivers need to be installed, and each of the other audio and video cards installs a driver for each card! If you find this phenomenon, you should remove all drivers for all video cards (including other duplicated devices in your system) in 'safe mode' and restart your computer.
11. Why can't the computer find the card?
Cause one: The computer power supply is not ATX power supply. Please use ATX power supply.
Cause two: The computer's PCI slot is damaged. Please change it to a slot test.
Cause 3: The card is damaged. Please change the card test.
12. What should I do if the video playback quality is poor?
For our hard disk recorder under the 'normal' compression quality, video playback quality is satisfactory. But sometimes the phenomenon of 'mosaic' is found to be serious. Especially for moving images, the image becomes blurred. The main reason is that your camera's brightness is too low (do not attempt to change the brightness of the hard disk recorder to compensate). Adjust the brightness of the camera to compensate. This should pay special attention to the construction of the project. 
13. What if the real-time monitoring image is not clear?
In the system setting of the digital hard disk recorder, "common camera" or "high-definition camera" can be selected according to the model or the resolution of the configured camera; at the same time, the brightness, chroma, contrast and saturation of the video can also be adjusted. Value to achieve satisfactory results.
14, the program can not start or initialization failed how to do?
Cause one: The shortcut is wrong. Unable to hook the application, the shortcut does not start, delete the shortcut and recreate or reinstall the program.
The second reason is that there is no acceleration software with Direct X 8.0 or later installed.
Cause 3: The card model has not been correctly identified. Run the Config.exe program to identify the card.
Cause four: The power supply is not ATX power supply or the power supply power is not enough. Switch to a high-power ATX power supply.
Cause five: The board is in poor contact and reinstall the board.
Cause six: The software and card are not compatible, that is, they are not compatible. Contact the product supplier.
Cause seven: There is a bad card and you need to confirm the availability of each card.
Cause 8: The PCI slot is damaged. Replace the slot.
A hard disk video recorder, or a digital video recorder, is a hard disk video recorder compared to a conventional analog video recorder and is often referred to as a DVR. It is a computer system that performs image storage processing and has image/voice. Long time recording, recording, remote monitoring and control functions. According to the system structure, hard disk video recorders can be divided into two categories, PC-based DVR based on PC architecture and embedded DVR out of PC architecture.