Knowing when to repair or replace your computer is one of the most practical decisions you'll face as a device owner. The answer isn't always obvious. A repair that costs $150 on a three-year-old laptop is a no-brainer. The same repair on a nine-year-old desktop running software it can barely handle is a different story. This guide walks through the key factors so you can make a confident, informed decision.
The age rule and why it matters
Age is the starting point for any repair-or-replace decision. A computer that's under four years old is worth repairing in most cases, assuming the fault is mechanical rather than catastrophic. A computer that's over seven years old is usually not, unless the repair is minor and the machine still meets your needs comfortably.
The middle ground, roughly four to seven years old, is where the real judgement call sits. At that age, hardware starts to fall behind modern software requirements. Windows 11, for example, requires a TPM 2.0 chip and an 8th-generation Intel processor or newer. Macs released before 2017 can't run macOS Sequoia. If your machine is already locked out of current operating systems, spending money on a repair extends the life of a device that's already on borrowed time.
One useful rule of thumb: if the repair costs more than 50% of what a comparable new or refurbished machine would cost, replace it. If the repair costs less than 25%, fix it. Between those two thresholds, factor in the other criteria below.
Repair costs in context
Not all repairs are equal. Some faults are cheap to fix and don't recur. Others signal deeper hardware decay. Here's how common repairs typically stack up:
- Screen replacement: $150–$350 for a laptop, depending on the model
- Battery replacement: $80–$180 for a laptop or MacBook
- HDD or SSD upgrade: $100–$250 including labour
- RAM upgrade: $60–$150 depending on capacity
- Motherboard replacement: $250–$600 or more, often uneconomical on older machines
If you're facing a motherboard fault or a logic board failure on a Mac, the repair cost frequently approaches or exceeds the resale value of the device. For a full breakdown of what Australians typically pay, the article on how much computer repair costs in Australia covers real-world pricing across common fault types.
Symptoms that point toward replacing
Some warning signs are worth taking seriously. A single fault can be fixed. Faults that stack up over a short period usually mean the machine is in general decline.
Replace your computer when you notice most of these at once: the machine runs hot even on light tasks, startup takes longer than three minutes, the fan runs constantly at high speed, software crashes regularly without a clear cause, and the battery (on a laptop) holds less than an hour of charge even after a replacement. Any one of those alone is fixable. All of them together on the same device point to hardware that has reached the end of its useful life.
Persistent overheating is worth calling out specifically. Dust buildup is fixable. But if a laptop continues to overheat after a full clean and thermal paste replacement, the problem is usually the CPU or cooling architecture itself, and repair rarely resolves it cleanly. The article on laptop overheating causes and solutions explains how to tell the difference between a fixable heat issue and a deeper hardware problem.
Symptoms that point toward repairing
Not every fault means the machine is finished. A slow computer is not a dying computer. Neither is a cracked screen or a failed drive, as long as the underlying hardware is healthy.
Repair is the right call when the fault is isolated: a failed drive that hasn't corrupted anything else, a battery that drains quickly but charges fine, a screen with a cracked panel but working internals, or a fan that's clogged with dust. These are all component-level problems. The machine itself is fine. Replacing a working computer because one component failed is wasteful and unnecessary.
Software slowdowns also don't require a hardware replacement. A MacBook that feels sluggish after several years of use is very likely fixable through software maintenance, storage cleanup, or a RAM or SSD upgrade rather than a full replacement.
What you actually use the machine for
Your workload shapes the threshold. A computer used mainly for web browsing, email, and document editing can remain productive for much longer than one running video editing software, 3D rendering tools, or modern games.
If your current machine handles everything you need without obvious strain, age matters less. A 2016 iMac running office apps and video calls is still a capable machine for that purpose. A 2019 laptop struggling to run a single browser tab with 20 extensions open is a different problem, and buying a new machine won't fix a bad habit.
Conversely, if you've outgrown your hardware, a repair won't help. Adding RAM to a machine that's bottlenecked by a slow processor won't make it noticeably faster for intensive tasks. In that case, replacement is the right answer regardless of the machine's age or condition.
Data: sort it out before you decide anything
Before committing to either option, make sure your data is safe. If your computer is in poor health, your storage drive may be too. A failing drive can take everything with it. Back up your files before the machine goes in for assessment, and back up again before any repair work starts.
If the drive is already showing signs of trouble, read the guide on what to do when your hard drive starts making clicking noises before it's too late to recover anything. Data recovery after a failed drive is expensive and sometimes impossible. Prevention costs almost nothing by comparison.
Refurbished as the third option
When replacement is the right call, buying new isn't the only option. A certified refurbished machine, particularly an Apple Certified Refurbished Mac or a business-grade refurbished PC from a reputable supplier, can deliver recent hardware at 20–40% less than retail. For many users, that's the best outcome: more capable hardware than what they were running, at a price closer to what a repair would have cost.
The key is buying from a source that tests the hardware properly and offers at least a 12-month warranty. A cheap refurbished machine with no warranty is not a bargain.
Making the call
To summarise the decision cleanly: if the machine is under four years old and the fault is isolated, repair it. If it's over seven years old and struggling with everyday tasks, replace it. Between those ages, weigh the repair cost against 50% of a comparable replacement, factor in whether the machine meets your software requirements, and consider whether the fault is a one-off or part of a pattern.
Most people hold onto computers longer than they should, then replace them later than is practical. Getting the timing right saves money on both the repair side and the replacement side.