(First check whether the adapter or other power cables are faulty or have poor contact.)
一、No backlight, no display:1.Is the PC power switch turned on?
Lý do：The customer is unaware of the PC power switch.
Giải pháp：Press the PC power button to turn on the computer.
2.Power supply is normal, PC power button light does not illuminate, motherboard red light.
Lý do:
Motherboard defect.
Giải pháp:Replace the motherboard.
3.Store data.
Lý do:Motherboard storage capacity is full
Giải pháp:Battery discharge (remove the battery for about 5 giây, then reinsert it)
4.RAM Installation (Máy tính)
Lý do:Memory module loose connection, loosened due to transportation vibration
Giải pháp:Heavy-duty truck memory module
5.RAM slot (máy tính)
Lý do:Slot contact issue
Soluton:If there are dual card slots, you can switch to another slot.
6.High-voltage busbar
Lý do：High-voltage busbar
Giải pháp：Replacement
7.Backlight cable
Lý do：Poor backlighting
Giải pháp:Replacement
8.LCD screen
Lý do：LCD Screen Fault
Giải pháp:Replacement
二、Backlight present, no display:The external monitor is displaying.
Lý do：The BIOS resolution is incorrect.
Poor contact in the LCD screen cable
Giải pháp:Flash the BIOS
Unplug the display cable. If that doesn’t work, replace the display cable. Replace the display cable.
三、Black screen after entering the system:Brightness Settings Issue
Lý do:Set brightness to minimum
Giải pháp:Increase the brightness on the external monitor.
四、Setup Issues：Whether BIOS and motherboard jumper settings are configured for power-on boot
Lý do:Setting both power-on methods simultaneously will prevent the device from booting up.
Giải pháp:Disable a power-on startup configuration method
五、After running for a period of time, a black screen restart can restore it：Hệ thống
Lý do：System error
Giải pháp：Reinstall the operating system
六、Touch display：Is the keypad switch turned off?
Giải pháp:Press the POWER button on the keypad.