Laptop Overheating? Thermal Paste, Fans and When to Service

In NCR's dusty summers, laptop fans pull in fine dust that blankets the heatsink fins. Factory thermal paste also dries out after 2-3 years. Together they cause heat, noise and throttling.

Symptoms

• Fan runs loudly even when browsing
• Keyboard area is too hot to touch
• Games or exports slow down after 5-10 minutes
• Random shutdowns under load

Quick checks at home

1. Use the laptop on a hard surface, not a bed or pillow.
2. In Windows, set Power mode → Balanced. On a MacBook, close heavy browser tabs and check Activity Monitor.
3. Blow compressed air through the vents in short bursts while holding the fan still with a toothpick.
4. Update the BIOS and the vendor's control app (Armoury Crate, Vantage, Omen Hub). They often include fan-curve fixes.

What a professional thermal service includes

• Complete bottom-case removal and fan cleaning
• Removal of dried paste and new high-grade paste (or liquid-metal-safe pads on gaming models)
• Replacement of degraded thermal pads on the VRM and VRAM
• A stress test before and after, with temperatures shared with you

How often

• Gaming laptops: every 12 months
• Office ultrabooks: every 2 years, or when the fan noise changes

MacBooks

Fanless MacBook Airs (M1 to M4) do not collect dust in fans, but they throttle under long loads by design. A thermal service helps only Intel and Pro models with fans.