Laptop Cooling System: open fan motor winding. An internal winding or cable conductor no longer carries current.

The distinguishing clue

The fan remains still despite a valid control command.

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: Check supply, command and tachometer lines before condemning the fan. If confirmed: Replace the failed fan and inspect its cable routing.

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.