The solution to the problem of no display on the ASUS S400CA series LCD is as follows:

Can you hear the system loading sound after turning on the computer?

Can you hear the system loading sound? , press FN+F7 to try turning on the backlight to see if the problem can be solved. If the problem is not solved, please contact ASUS service center for testing.

Cannot hear the system loading sound, please contact ASUS service center for testing.