A technician recently installed a new video card in a PC. The PC already has integrated video on the motherboard. When the technician turns on the PC, there is no video. Which of the following is…

The correct answer is C. The power connector for the video card is unplugged. Discrete graphics cards, especially mid-range and high-end models, require a dedicated PCIe power connector (6-pin or 8-pin) from the power supply in addition to the slot power. If this connector is not plugged in, the card will not initialize and there will be no video…

Hardware and network troubleshooting

Question

A technician recently installed a new video card in a PC. The PC already has integrated video on the motherboard. When the technician turns on the PC, there is no video. Which of the following is MOST likely the cause?

Options

AThe motherboard BIOS version is out of date.
BThe incorrect video card drivers are installed.
CThe power connector for the video card is unplugged.
DThe video card is unsupported by the motherboard.

How the community answered

(22 responses)

A
5% (1)
C
91% (20)
D
5% (1)

Explanation

Discrete graphics cards, especially mid-range and high-end models, require a dedicated PCIe power connector (6-pin or 8-pin) from the power supply in addition to the slot power. If this connector is not plugged in, the card will not initialize and there will be no video output-especially if the BIOS has switched the primary display to the discrete card. An outdated BIOS (A) rarely prevents a card from working entirely. Incorrect drivers (B) would not cause a no-video condition before the OS loads (POST would still show output). An unsupported card (D) is possible but far less common than a missing power connector after a fresh installation.

Topics

#video card installation#power connector#discrete GPU#hardware troubleshooting

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