After opening up the lid of a laptop that is powered on, nothing is displayed on the LCD. Opening and closing the lid multiple times usually causes the display to regain the signal. Which of the following components should the technician check FIRST?（）A、MotherboardB、Video cardC、Cutoff switchD、AC adapter
After opening up the lid of a laptop that is powered on, nothing is displayed on the LCD. Opening and closing the lid multiple times usually causes the display to regain the signal. Which of the following components should the technician check FIRST?（）
- A、Motherboard
- B、Video card
- C、Cutoff switch
- D、AC adapter
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