单选题After hardware upgrades have been installed, the technician boots the computer system. Nodisplay output is observed but a beeping is heard from the computer. Which of the following is the MOST likely issue?（）AHard drive cables are not connected.BBIOS chips are not seated properly.CThe power supply is not functioning.DVideo card is not seated properly.
单选题
After hardware upgrades have been installed, the technician boots the computer system. Nodisplay output is observed but a beeping is heard from the computer. Which of the following is the MOST likely issue?（）
A
Hard drive cables are not connected.
B
BIOS chips are not seated properly.
C
The power supply is not functioning.
D
Video card is not seated properly.
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