Your computer is running slow, the fan sounds like a hairdryer or, worse, it shuts down by itself mid-game. Before you think about buying a new one or wiping the drive, there's a suspect we overlook far too often: dirt. On the Costa del Sol, between beach dust, sea humidity and summer heat, computer cleaning isn't a luxury, it's basic maintenance. In this article we'll cover the signs that your PC needs cleaning and new thermal paste, what a professional service includes and what it costs in Málaga.
Sign 1: the fans roar for no apparent reason
If your tower or laptop sounds like it's taking off even with nothing running on the desktop, it's the classic sign of dust buildup. Fans spin faster to compensate for clogged heatsinks and vents, and at some point they run at full speed without managing to bring temperatures down. That constant whine isn't just annoying: every extra revolution is unnecessary wear that shortens the fans' lifespan. And if the sound has become deeper or metallic, the bearings may already be damaged by dust and heat.
Sign 2: unexpected shutdowns and restarts
A computer that switches itself off while you're gaming, rendering or working under heavy loads is sending you a clear message. When the CPU or GPU temperature exceeds a safety threshold, the system shuts down abruptly to protect the components, without warning and without saving anything. If it happens often, especially during July and August in Torremolinos, cleaning and a thermal paste replacement usually fix the problem before you permanently damage the processor. If the shutdowns continue after cleaning, it's worth going through a computer repair service, because it could already be a power supply or motherboard fault.
Sign 3: the PC is slow or "chokes" under heavy load
There's a phenomenon called thermal throttling that many people mistake for low memory or a full drive: when the processor hits a certain temperature, it reduces its clock speed to cool down. The result is that your computer, which used to handle everything, now takes longer to open programs, stutters in games and has slowdowns that make no logical sense. If the machine is slow only after a while under heavy load, and not at startup, think temperature before reinstalling Windows.
Temperatures: how to check them at home
You don't need to be a technician to suspect overheating. With free programs like HWiNFO, Core Temp or MSI Afterburner you can see CPU and GPU temperatures in real time. As a rough reference:
- At idle (desktop): 35-50 °C is normal.
- Under load (gaming or heavy work): up to 80-85 °C is acceptable; above 90 °C is the danger zone.
- If you see spikes of 95-100 °C, the machine is screaming for a cleaning.
Mind you, these figures vary depending on the processor and cooling type, but as a general rule they're good enough to spot problems.
Thermal paste: why it dries out and how often to replace it
Thermal paste is that grey compound between the processor and its heatsink, and its job is to transfer heat efficiently. Over time it dries out, cracks and turns into a powder that insulates instead of conducting. The typical lifespan of good-quality paste is between 3 and 5 years; after that, temperatures rise gradually and the symptoms we've described begin. In laptops, which suffer more heat due to their compact design, degradation usually comes sooner. Replacing it is a cheap and quick job, but it requires carefully removing the heatsink: doing it wrong can bend pins or leave the paste unevenly spread, so if you've never done it, it's better left to someone who does it daily.
What does a professional cleaning include?
A serious computer cleaning service is not "blowing dust with a spray can". In our workshop, a full cleaning includes:
- Opening the tower or laptop and removing the necessary components.
- Thorough cleaning with compressed air of the board, slots, fans, heatsinks and vents.
- Removing the fans to clean them piece by piece, without water or products that could damage the bearings.
- Replacing the CPU thermal paste (and GPU paste if the model allows it).
- Reassembly, airflow check and an under-load temperature test to confirm the improvement.
- A report on the machine's condition and maintenance tips.
With desktop machines we also take the chance to check that cables aren't blocking air intake and that the case has reasonable airflow.
How much does computer cleaning cost in Málaga?
Computer cleaning prices in Málaga and the Costa del Sol are fairly stable. As a market reference for 2026:
- Desktop tower: full cleaning with thermal paste replacement, 30-60 €.
- Laptop: 40-70 €, due to the more delicate disassembly work involved.
- Thermal paste change only (no deep cleaning): 25-40 € of labour.
- The temperature test and report are usually included in the price.
That's money you earn back many times over: a clean, well-cooled machine performs better, makes less noise and delays the need to replace hardware by years. And if you take the chance to let us optimise Windows too, startup and general performance improve noticeably; we cover that in our computer cleaning and optimisation service.
Prevention: the humidity and heat of the Costa del Sol
Living near the sea has plenty of advantages, but the coastal environment is harsh on electronics. Humidity accelerates corrosion, sea salt dirties contacts and summer heat punishes cooling. A few good habits go a long way:
- Place the tower in a ventilated spot, not in a closed cabinet or shoved against a wall.
- Keep the tower away from windows and terraces where sea air loaded with salt can reach it.
- If you live on a ground floor or near the beach, clean the case filters every 2-3 months.
- In summer, do heavy gaming or work with the air conditioning on, or during the cooler hours of the day.
- Schedule an annual cleaning before summer: it's the perfect time for the machine to survive July and August without complaint.
- Don't smoke or eat near the machine: ash and crumbs are dust in its purest form for the fans.
And if you're thinking of replacing the machine because it no longer performs like it used to, before throwing in the towel check out how much a gaming PC build costs in 2026: sometimes a good cleaning gives a second life to a computer that seemed dead.
Is your computer slow, noisy or shutting down by itself? Don't wait for the heat to do more damage: call us at +34 641 00 63 61 (Monday to Friday, 9:30-20:30), WhatsApp or send us a message through the contact form and we'll give you a fixed price for cleaning your machine.