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Question

Difficulty: EasyVideo, Display, and Projector Issues

A desktop user reports that strange geometric shapes, flickering lines, and colored dots appear across the screen whenever 3D rendering applications are running. When viewing basic text documents, the display functions normally. Which of the following is the most likely root cause of this display issue?

  1. Overheating GPU or failing video memory (VRAM)Answer
  2. B
    Corrupted monitor display drivers in the operating system
  3. C
    A failing backlight inverter board inside the LCD monitor
  4. D
    Insufficient bandwidth on the external DisplayPort cable

Answer

Overheating GPU or failing video memory (VRAM)
Visual artifacts such as flickering lines, stray geometric patterns, or discoloration that appear specifically during intensive graphical tasks are classic indicators of GPU thermal issues or defective VRAM. When VRAM fails under load, incorrect pixel data is sent to the display.

Step-by-Step Solution

1
Analyze the reported display symptoms
Visual artifacts (lines, shapes, dots) occur exclusively during high 3D graphics workloads.
Correlating symptoms with system load isolates rendering hardware from general monitor display components.
2
Identify the component responsible for 3D frame rendering
The Graphics Processing Unit (GPU) and its dedicated Video RAM (VRAM) perform complex rendering tasks.
When VRAM modules fail or the GPU thermal threshold is exceeded under load, corrupted data produces distorted rendered frames.

Key Concept

Identifying GPU and VRAM Hardware Artifacts
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Topics

Video, Display, and Projector Issues

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