Learn why checking power connections to the GPU is the first step when a new graphics card powers on but displays no video output, as required for the CompTIA A+ Core 1 220-1101 exam. Discover how proper PCIe power delivery is essential for GPU functionality in gaming PCs.
Table of Contents
Question
A technician is installing a new graphics card in a gaming PC. The PC powers on but does not display any video output. What should be checked first?
A. The CPU clock speed
B. The BIOS version
C. The hard drive partitions
D. Power connections to the GPU
E. The operating system settings
Answer
D. Power connections to the GPU
Explanation
High-performance GPUs often require additional power connectors from the PSU.
Modern high-performance graphics cards require additional power beyond what the PCIe slot provides. While the PCIe slot supplies up to 75 watts, most gaming GPUs need one or more dedicated PCIe power connectors (6-pin, 8-pin, or newer) from the power supply unit (PSU) to function correctly. If these power connectors are not attached, are loose, or if splitters (pigtails) are improperly used, the GPU may power its lights and fans but will not initialize fully, resulting in no video output.
Industry guidance and manufacturer recommendations emphasize using separate, direct PCIe cables from the PSU for each required connector, especially for GPUs with high power demands. Insufficient or missing power connections are the most common cause of a system powering on with no display after a new GPU installation. Always ensure all required PCIe cables are securely connected to the GPU and, when possible, avoid using splitters for high-power cards.
If the power connections are secure and the issue persists, further troubleshooting should include verifying the display cable and port, reseating the GPU, and checking for motherboard compatibility or BIOS settings. However, confirming GPU power connections is the essential first step for this scenario.
CompTIA A+ Core 1 220-1101 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA A+ Core 1 220-1101 exam and earn CompTIA A+ Core 1 220-1101 certification.