We're often asked "should I repair or replace my computer?" The honest answer depends on the age, the fault, and how the computer has been treated. Here's what actually determines how long a computer lasts.
Average Lifespans by Type
Desktop PCs commonly last 8–12 years. Components are individually replaceable, making them the most cost-effective to maintain long-term. A desktop bought in 2015 with an SSD upgrade and RAM bump is still a capable machine in 2025.
Laptops typically last 5–8 years. The sealed design means heat management is harder, batteries degrade, and physical damage is more common. Budget laptops often fail faster due to lower-quality components.
MacBooks tend to last 7–10 years. Apple's hardware quality is high, but repairs become harder after year 6–7 as parts become scarce and software support ends.
What Actually Kills Computers
Heat is the number one killer. Dust buildup inside a computer acts as insulation, trapping heat against components. A computer running hot continuously degrades capacitors, solder joints and storage far faster than one running cool.
Cheap power supplies send noisy or spiking power to every component in a desktop, degrading them over time.
Mechanical hard drives have moving parts that wear out. Replacing them with an SSD is the single best longevity upgrade you can make.
Maintenance That Genuinely Helps
- Professional internal clean every 2 years (dust removal, fresh thermal paste)
- Keep Windows and drivers updated
- Don't let a laptop sit on soft surfaces that block the vents
- Use a UPS (uninterruptible power supply) to protect from power surges
- Don't let the hard drive fill above 80% capacity
The Upgrade-vs-Replace Rule
If the core components (CPU, motherboard) are healthy and the fault is a single replaceable part — drive, RAM, battery, screen — repair almost always makes financial sense. If the motherboard has failed on a 7+ year old laptop, replacement is usually the better choice.
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