Laptop GPU fan spinning at maximum speed constantly

4.5

The GPU fan runs at 100% speed even when the system is idle.

Symptoms
  • Very loud noise
  • Vibration
  • Cool air blowing out
Possible Causes
  • Sensor failure
  • Corrupt BIOS/Firmware
  • Malware

Step-by-Step Fix

1

Reset BIOS

Restore BIOS settings to default.

2

Update Firmware

Check for VBIOS or system BIOS updates.

3

Scan for Malware

Ensure no hidden processes are taxing the GPU.

When to See a Technician

Constant max fan speed often suggests a communication error between the thermal sensor and the controller.

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