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Make It Last

What actually kills laptops (and how to avoid it)

By Editorial Team Published 2 min read
os general tested 2026-09-09 retest 2027-03 by editorial team
Quick Fix
01 Two things end most laptops early: heat (dust-clogged vents, soft surfaces) and liquid. Clear the vents every few months, keep it on a hard surface, and keep drinks away from it.
02 Everything else — drops, worn batteries, cable stress — is a distant third.
tested general · 2026-09-09

Laptops rarely die of old age — they die of neglect. Here’s what actually kills them, most common first, and the low-effort habits that prevent each.

1. Heat (the silent killer)

Sustained high temperatures cook components and batteries. The main causes are dust-clogged vents and fans and using the laptop on soft surfaces (beds, sofas, laps) that block the intakes. Prevention:

  • Blow out the vents with compressed air every 3–6 months.
  • Use it on a hard, flat surface; a cheap cooling pad helps if it runs hot.
  • If the fan roars and the base is hot, act — see our loud-fan guide.

2. Liquid

A single spill can end a laptop instantly by shorting the board. Keep drinks well away, and if a spill happens: power off immediately, unplug, remove the battery if you can, turn it upside down to drain, and get it to a repair shop — do not power it back on to “test” it.

3. A swollen or worn battery

Lithium batteries degrade with heat and time; a swollen battery (trackpad or case bulging, lid not closing flat) is a genuine safety issue — stop using it and get it replaced. Keeping the laptop cool and not leaving it at 100% in heat slows this.

4. Physical stress

  • Drops — a decent case/sleeve and not carrying it by the screen go a long way.
  • Charger-cable stress — cables fray where they meet the connector; don’t yank them, and don’t leave the cable bent sharply.
  • Hinge wear — open it from the centre, not one corner.

5. Storage failure (on older machines)

A mechanical hard drive is a moving part that eventually fails. If your laptop still has an HDD, moving to an SSD is safer and faster — and a good moment to make sure your backups are in order, because drives fail without warning.

The one-minute maintenance routine

Every few months: blow out the vents, check the battery isn’t swelling, confirm your backup ran, and update the OS. That’s most of what keeps a laptop alive to 6–8 years.

Frequently asked questions

Should I unplug once it hits 100%?

Modern laptops manage charging, so it’s not urgent — but avoiding long spells at 100% in a hot room does help the battery. Many laptops offer an 80% charge-limit setting; it’s worth turning on if you mostly use it plugged in.

Is it bad to shut the lid and put it in a bag straight away?

If it’s still working hard (fans spinning), give it a moment to sleep and cool — a bag traps heat. Confirm it actually slept before packing it.

Do cooling pads really help?

Yes, modestly — they feed cooler air to the intakes and can drop temperatures several degrees, which matters over years.

Sources