(Kontrollera först om adaptern eller andra strömkablar är trasiga eller har dålig kontakt.)
en、Ingen bakgrundsbelysning, ingen display:1.Är datorns strömbrytare påslagen?
Resonera：Kunden känner inte till datorns strömbrytare.
Lösning：Tryck på PC-strömknappen för att slå på datorn.
2.Strömförsörjningen är normal, Lampan för PC-strömknappen tänds inte, motherboard red light.
Resonera:
Motherboard defect.
Lösning:Replace the motherboard.
3.Store data.
Resonera:Motherboard storage capacity is full
Lösning:Battery discharge (remove the battery for about 5 sekunder, then reinsert it)
4.RAM Installation (Dator)
Resonera:Memory module loose connection, loosened due to transportation vibration
Lösning:Heavy-duty truck memory module
5.RAM slot (dator)
Resonera:Slot contact issue
Soluton:If there are dual card slots, you can switch to another slot.
6.High-voltage busbar
Resonera：High-voltage busbar
Lösning：Replacement
7.Backlight cable
Resonera：Poor backlighting
Lösning:Replacement
8.LCD-skärm
Resonera：LCD Screen Fault
Lösning:Replacement
två、Backlight present, ingen display:The external monitor is displaying.
Resonera：The BIOS resolution is incorrect.
Poor contact in the LCD screen cable
Lösning:Flash the BIOS
Unplug the display cable. If that doesn’t work, byt ut bildskärmskabeln. Replace the display cable.
三、Black screen after entering the system:Brightness Settings Issue
Resonera:Set brightness to minimum
Lösning:Increase the brightness on the external monitor.
四、Setup Issues：Whether BIOS and motherboard jumper settings are configured for power-on boot
Resonera:Setting both power-on methods simultaneously will prevent the device from booting up.
Lösning:Disable a power-on startup configuration method
五、After running for a period of time, a black screen restart can restore it：System
Resonera：System error
Lösning：Reinstall the operating system
六、Touch display：Is the keypad switch turned off?
Lösning:Press the POWER button on the keypad.