Most laptops do not fail suddenly. They give warning signs for weeks or months first. Knowing what those signs mean lets you fix small problems cheaply — and back up your files before a big one.
Overheating and a noisy fan
What you notice: the fan roars, the underside gets hot, and the laptop slows down or switches itself off under load.
What is usually happening: dust has built up inside, or the vents are blocked. When a laptop gets too hot it deliberately slows itself down to protect the components.
What you can do: use it on a hard, flat surface rather than a bed or sofa, keep the vents clear, and close programs you are not using. If it is still running hot, a professional internal clean — and on older machines, fresh thermal paste — usually makes a dramatic difference.
A failing hard drive
What you notice: clicking or grinding noises, files that will not open, frequent freezes, or warnings about disk errors.
What to do: back up your important files immediately, then stop using the machine as much as possible. A failing drive can stop working completely at any moment, and every hour of use makes data recovery harder. The good news is that the drive itself is usually replaceable, often with a much faster solid-state drive (SSD).
A swollen battery
What you notice: the trackpad is raised or clicks oddly, the case has started to bulge or separate, or the laptop no longer sits flat.
What to do: stop using it and unplug it. A swollen lithium-ion battery can be a fire risk. Do not press on it or try to remove it yourself if it is built in. Keep the laptop somewhere cool and away from anything flammable, and get the battery replaced professionally.
The slow decline that is not a virus
Many laptops simply get slower over time. Common causes:
- dozens of programs starting automatically when the laptop switches on;
- a nearly full drive — aim to keep at least 15–20% free;
- an older mechanical hard drive rather than an SSD;
- not enough memory (RAM) for the way the machine is now used.
Removing startup programs and clearing space costs nothing. For an older laptop with a mechanical drive, upgrading to an SSD is often the single best-value repair there is — it can make a five-year-old machine feel new.
Habits that prevent most problems
- Keep it updated — updates fix security holes and bugs.
- Back up regularly and automatically, ideally to the cloud and an external drive.
- Use a padded bag and avoid carrying it while it is still running.
- Do not leave it charging on a soft surface for hours on end.
When to stop spending money
Our rule of thumb: if a repair costs more than about half the price of a suitable replacement, and the laptop is more than five years old, it is usually time to replace it. Also consider whether it can still receive security updates — Windows 10 no longer gets free security updates, so a machine that cannot run Windows 11 is a poor candidate for an expensive repair.
We will always tell you honestly which side of that line your laptop falls on. Diagnosis comes first, and you get a fixed price before any work begins.