Laptop 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

Use the laptop on a firm surface with its vents unobstructed. Record whether exhaust airflow and fan noise change during normal work; stop after a thermal shutdown.

Stop point: Do not run heavy workloads when the fan is stopped or exhaust air is absent.

Workshop confirmation and repair

Device-level check: Record fan speed, temperature and workload, then inspect the complete air path and mounting.

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 confirmed fan, heatsink, pad, compound or control fault as one cooling path.

Related cause to rule out

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

Checks after the work

After repair or replacement, check idle, processor load, fan response, sleep 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.