Desktop GPU Cooling System: dust blockage. A dense mat prevents air passing through the fins even while the fan spins.

The distinguishing clue

Fan speed rises but exhaust airflow remains weak.

Checks before an assessment

Record whether visual artefacts, fan noise and loss of video occur together. Stop graphics load when there is excessive heat, a burning smell or a stopped fan.

Stop point: Stop graphics-load testing if artefacts combine with excessive heat or burning smell.

Workshop confirmation and repair

Device-level check: Log graphics temperature, hotspot, clocks and fan speed while checking case airflow and card condition.

Targeted check: Inspect the full air path rather than cleaning only visible vents. If confirmed: Remove debris safely and verify that fins and shrouds are clear.

Repair boundary: Repair the fan, heatsink, pad, compound or controller fault confirmed on the graphics card.

Related cause to rule out

When rattling, scraping or delayed fan startup changes with orientation, also consider Desktop GPU Cooling System: worn fan bearing before choosing a repair.

Checks after the work

After repair or replacement, check video output, graphics load, fan response, hotspot and cooldown.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.