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Home / Services / Computer Repair / Overheating

Desktop overheating or randomly shutting down?

Loud fans and shutdowns under load usually point to dust build-up in the case, not a failing CPU.

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28+ Years Experience
Standard Component Warranty (*T&C Applies)
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Open Sun–Fri
Google Reviews

What Our Customers Say — Straight From Google

★★★★★

My custom gaming PC had overheating problems and I found Dotronix from Google and I reached out to them. They did a splendid job to fix my issues. Highly recommend their if there's any issues

Google Review · Kepong Branch
★★★★★

rog strix g713. overheating issue. found them online and for affordable prices. best laptop repair service in the area. manage to solved the issue. they’re really friendly too.

Google Review · Kepong Branch
★★★★★

Had issues with my laptop speed and memory, with lag and overheating. In one day, I got it back fully serviced with all the issues cleared up and now my laptop runs smoother than ever.

Google Review · Kuchai Lama Branch

What's going on

Desktop towers pull far more air through their case fans and filters than a laptop does, which means dust accumulates on the CPU heatsink, GPU, and PSU intake over time — especially in Kuala Lumpur's humidity, and especially in home offices without regular air conditioning. We open the case, clean every intake point and heatsink, and replace CPU thermal paste that's dried out and lost effectiveness after a few years.

Common signs to look out for

  • Case fans running loudly, especially under load
  • Random shutdowns during gaming or rendering
  • Case exterior noticeably warm to the touch
  • Thermal throttling warnings or sudden performance drops
  • BSOD crashes that happen specifically under heavy use

What usually causes it

  • Dust-clogged CPU heatsink and case fans
  • Dried-out or degraded CPU thermal paste
  • Poor case airflow from cable clutter
  • A failing case fan or CPU cooler fan

How we diagnose this

01

Thermal stress test

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

02

Dust & airflow inspection

We check every intake point, filter, and case fan for buildup and obstruction.

03

Heatsink & paste inspection

The CPU cooler is removed to inspect heatsink contact and paste condition.

04

Clean, repaste & retest

Everything is cleaned, fresh paste applied, and temperatures retested under load.

Common questions

Desktop overheating FAQs

Cleaning and thermal repaste starts from RM 150. If a case fan or CPU cooler has failed, a replacement may add to that cost — confirmed after diagnosis.
Heavy loads like gaming or rendering push the CPU and GPU to full power, which is exactly when a dust-clogged cooling system fails to keep up — a clean and repaste often resolves crashes that only happen under load.
Usually same-day, since it's a cleaning and repaste job rather than a parts replacement in most cases.
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 desktop 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 desktop 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 a guided workshop visit at Kepong, arrange onsite service, or send us a photo — a free Live Agent assessment either way.*

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