How do I make a computer last longer?

Computers rarely fail suddenly; they degrade. Heat shortens component life and triggers thermal throttling that makes a machine feel slow; a full drive slows the operating system; and an old mechanical drive makes everything feel dated. All three are addressable.

What you'll need

• Compressed air or a soft brush
• Screwdriver for the case
• Replacement SSD (optional)
• Thermal paste (optional)

Step by step

1. Keep vents clear and clean dust out regularly.Every 6–12 months. Dust in the fans and heatsink is the main cause of overheating and throttling.
2. Use a laptop on a hard surface rather than a bed or lap.Soft surfaces block the intake vents underneath, which are usually the only air intake.
3. Keep at least 15% of the drive free.Both Windows and macOS need working space and slow markedly when nearly full.
4. Install operating system and security updates.Both for security and because updates frequently include stability and performance fixes.
5. Replace a mechanical hard drive with an SSD.The single most effective upgrade for an older machine, and usually inexpensive. Back up first.
6. Add RAM only if the machine is genuinely running out.Check actual usage under your normal workload rather than assuming.
7. For a laptop, avoid keeping it plugged in at 100% permanently if it has a charge limit setting.Many now offer an 80% charge limit for machines that live on a desk, which reduces battery wear.
8. Uninstall software you don't use, particularly anything running at startup.Manufacturer utilities and old security suites are common performance drains.
9. Back up regularly, so hardware failure is an inconvenience rather than a disaster.Every machine eventually fails. Backup is what determines how much that matters.

Tips

• A can of compressed air and ten minutes once a year genuinely extends hardware life. Hold fans still while blowing them, or they can over-spin and be damaged.
• If a laptop is hot and loud under light load, it needs cleaning. Thermal throttling makes a healthy machine feel obsolete.
• Older machines that can't run current operating systems can often run a lightweight Linux distribution well for years more.
• Replacing thermal paste on an older desktop or laptop can substantially reduce temperatures, but it requires disassembly — worth it only if you're comfortable doing it.

Common mistakes

• Ignoring dust and heat — Heat is the main cause of hardware degradation and the main cause of a machine feeling slow.
• Running the drive at capacity — Both operating systems slow dramatically when short of free space.
• Using a laptop on soft surfaces — It blocks the air intakes, causing sustained high temperatures.
• Buying new before trying an SSD — On a machine with a mechanical drive, this one upgrade often delivers most of the benefit of a new computer.

Questions people ask