A desktop support technician is diagnosing several reported video and display issues across various user workstations. Match each observed video display symptom on the left with its most probable root cause on the right.
- A monitor connected via an analog VGA cable displays a continuous green tint across the entire screen.Bent or broken signal pins within the DB-15 video cable connector.
- An LCD laptop monitor remains completely dark during operation, but desktop icons become faintly visible when a flashlight is aimed directly at the glass.Failure of the CCFL backlight assembly or backlight power inverter board.
- A workstation powers on with active cooling fans, but fails to output video while emitting a distinct sequence of motherboard beep codes.An improperly seated or unpowered discrete PCIe graphics card causing a POST hardware failure.
- On-screen text and window elements appear distorted, stretched, and blurry immediately following a fresh operating system setup.Display adapter functioning on a generic fallback driver at a non-native resolution.
Answer
Each display symptom accurately pairs with its hardware or driver cause: analog color tinting stems from bent connector pins; a dark display illuminated by external light indicates a backlight/inverter failure; POST beep codes with no video indicate an unseated discrete graphics card; and blurry, stretched graphics result from non-native resolution settings under default display drivers.
All paired items reflect standard hardware behavior and failure modes: analog signal pins govern discrete color channels, backlights illuminate LCD matrices, motherboard beep codes indicate POST video initialization faults, and native panel scaling requires proper GPU driver configuration.
Step-by-Step Solution
Key Concept
Display Hardware and Video Signal Troubleshooting
Estimated Time:2m 30s