The problem that the DVI LCD monitor cannot display can be caused by a variety of reasons, including hardware failure, software configuration problems, cable connection problems, etc. Here are some common ways to solve this type of problem:

1. Check the connection of the power cable and DVI signal cable

First, check the power cable and DVI signal cable connections to make sure they are securely connected to the LCD monitor and computer. If there is a loose connection, it may cause the LCD monitor to not display properly.

2. Check your computer's graphics card and drivers

If the cable connection is correct, the problem may be with your computer's graphics card and drivers. You could try reinstalling your graphics card driver and make sure it's fully updated. If the driver has been updated and the problem persists, the graphics card may need to be replaced or upgraded.

3. Check the settings of the LCD monitor

It is possible that something is wrong with the settings of the LCD monitor, causing the monitor not to work properly. Check and change the settings in your monitor's menus to make sure they are compatible with your computer's graphics card, and try to fix the problem by adjusting settings like brightness and contrast.

4. Check the power and signal lights of the monitor

The power and signal lights on the LCD monitor can be used to indicate the working status of the monitor. If these lights do not come on, it may be due to insufficient power or a malfunction. Try connecting a different power plug to a different power outlet, or try using a different power or DVI cable to resolve the issue.

5. Check the hardware failure of the LCD display

If all of the above do not resolve the issue, there may be a hardware failure with the monitor itself. In this case, users need to find professional maintenance personnel or service center for inspection and repair.

In short, when the DVI LCD monitor fails to display, you can follow the above common methods to troubleshoot step by step to find the root of the problem. If you really can't find the problem, you can seek professional help to solve the problem faster.