What does GPU Artifacting / Black Screen Under Load mean?
Graphics card produces visual artifacts (glitches, colored squares, lines) or crashes when running 3D applications.
Common causes
- Overheating GPU - dry thermal paste
- Failing VRAM module
- GPU core damage from overvolt/overclock
- Insufficient PCIe power
- PCIe slot or GPU PCB damage
Diagnostic & testing steps
- 1. Monitor GPU temperature under load with HWiNFO or GPU-Z
- 2. Throttling above 83°C (Nvidia) / 85°C (AMD) indicates thermal problem
- 3. Repaste GPU with quality thermal paste
- 4. Reseat GPU in PCIe slot
- 5. Verify all PCIe power connectors are fully seated
- 6. Run GPU memory test with MATS or OCCT
Tools required
- HWiNFO
- Thermal paste
- Screwdrivers
- OCCT GPU test
OEM parts & part numbers
Thermal Paste, Thermal Pads, GPU Fan
Safety warning
⚠️ Allow GPU to cool before removing heatsink. Capacitors may hold charge briefly after power off.
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