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Laptop overheating or shutting down on its own?

A loud fan and hot chassis usually means dust and dried thermal paste are stopping your laptop from cooling itself properly.

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What's going on

Laptops build up dust inside their cooling fins over time, especially in Malaysia's humid climate. Once airflow is restricted, heat has nowhere to go, and the system either throttles performance or shuts down entirely to protect itself. Our cleaning service opens the cooling assembly, clears out dust and debris, and replaces the thermal paste between the CPU/GPU and heatsink — the same paste that dries out and loses effectiveness after a few years of use.

Common signs to look out for

  • Fan running loudly, constantly, even during light use
  • Chassis noticeably hot to the touch
  • Random shutdowns, especially during demanding tasks
  • Performance suddenly drops during use (thermal throttling)
  • A burning smell when the laptop has been on for a while

What usually causes it

  • Dust-clogged fan and heatsink fins
  • Dried-out or degraded thermal paste
  • Blocked air vents from being used on soft surfaces
  • A failing or seized fan motor

How we diagnose this

01

Thermal stress test

We monitor CPU and GPU temperatures under load to confirm how severe the overheating actually is.

02

Fan & vent inspection

We check airflow, listen for motor noise, and confirm vents aren't blocked.

03

Cooling assembly strip-down

The heatsink assembly is opened, dust cleared, and heatsink contact inspected.

04

Repaste & reassemble

Fresh thermal paste is applied and temperatures are retested under load before handover.

Common questions

Laptop overheating FAQs

Cleaning and thermal repaste starts from RM 150. If the fan motor itself has failed, a replacement fan may add to that cost — confirmed after diagnosis.
Usually same-day, since it's a cleaning and repaste job rather than a parts replacement in most cases.
Yes — prolonged, severe overheating can damage board components over time, which is why it's worth addressing as soon as you notice loud fan noise or random shutdowns.
Same-day is common when the part is in stock and the fault is straightforward — the Same day window mainly accounts for part availability for less common laptop models. We confirm your actual timeline after diagnosis, not just the general range.
No. This is a hardware-level fix that doesn't touch your storage or files — your laptop boots back into exactly the same software state it was in before, data untouched.
Every repair carries our Standard Component Warranty, terms and conditions applying to labour and the fix itself. If a replacement part carries its own separate manufacturer or supplier warranty — batteries and SSDs typically do — that can extend further depending on the specific part, and we tell you exactly what applies to your repair before any work begins.
No. Basic live-agent assessment is always free at Dotronix, whether you approve the repair afterward or not. You only pay if you say yes to the quote we send you.
Both work, shaped to each hub. Book ahead with Our Live Agent for a guided workshop visit in Kepong, or visit our Kuchai Lama branch — call/WhatsApp first to confirm availability. Either way you get the same diagnosis and pricing.
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Free Assessment By Live Agent (*T&C Applies)

Book ahead at Kepong, visit our Kuchai Lama branch (call/WhatsApp first), or send us a photo and we'll tell you what's wrong — free of charge.

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