If you manage the budget for an office, school or charity, you have probably had this conversation more than once: a laptop is getting slow, someone is complaining, and you are left wondering whether to spend a little on fixing it or a lot on replacing it. There is no single right answer for every device, but there are some sensible rules of thumb that can help you plan ahead rather than react to each breakdown.
How long do business computers typically last?
As a general guide, many businesses work on a replacement cycle of roughly three to five years for laptops and four to six years for desktop PCs. Desktops tend to last a little longer because they stay in one place, run cooler and are easier to upgrade. Laptops get carried around, dropped, knocked and charged constantly, so their batteries, hinges, keyboards and screens wear out sooner.
That said, lifespan depends heavily on a few factors:
- The quality of the machine when you bought it. Business-grade models are usually built to last longer than cheaper consumer laptops.
- How it is used. Someone working with large spreadsheets, design software or video calls all day will feel an ageing machine sooner than someone who mostly uses email.
- How well it has been looked after, including updates, cleaning and monitoring.
- Whether it is still supported by the manufacturer and by Microsoft.
The security question: software support matters more than you think
A computer can still switch on and run perfectly well yet no longer be safe to use. When an operating system reaches its end of support, it stops receiving security updates. Microsoft ended support for Windows 10 in October 2025, so any device that cannot run Windows 11 is now a real concern, not just an inconvenience. Older PCs often fail Windows 11's hardware requirements, which is one of the most common reasons businesses are replacing machines that otherwise seem fine.
Running unsupported systems can leave you exposed to cyber attacks, and it may cause problems with cyber insurance, Cyber Essentials certification or the data protection expectations placed on schools, care providers and charities. For many organisations, this is the deciding factor.
Signs a device is reaching the end of its useful life
These are the warning signs we see most often:
- It takes several minutes to start up or open everyday programs, even after a tidy-up.
- It cannot be upgraded to a currently supported version of Windows.
- The battery barely lasts an hour away from the charger.
- It crashes, freezes or overheats regularly.
- Staff are losing time every day waiting for it, or avoiding using it altogether.
- Spare parts are getting hard to find or are expensive.
That last point about staff time is worth dwelling on. A slow computer rarely costs nothing. If someone loses even a few minutes several times a day, that adds up over a year, and it is frustrating for them too.
When repairing makes sense
Repair is often the right call when the device is relatively young and the fault is isolated. Good candidates include:
- Replacing a worn-out battery or a failed charger.
- Upgrading memory (RAM) or swapping an old hard drive for a solid-state drive, which can make an older machine feel noticeably quicker.
- Fixing a cracked screen or broken keyboard on a laptop that is otherwise in good shape.
- Removing unwanted software and resolving configuration problems.
A useful rule of thumb: if the repair costs a significant proportion of the price of a new equivalent machine, or the device is already near the end of its expected life, replacement is usually better value. Spending money on a four-year-old laptop that cannot run Windows 11 rarely makes sense.
When replacing is the better option
Replace when the device is no longer supported, when several things are failing at once, or when it simply cannot keep up with the work it needs to do. It also makes sense to replace rather than repair if a machine has suffered liquid damage or a motherboard failure, as these repairs tend to be costly and unreliable.
Plan replacements rather than waiting for failures
The businesses that handle this best keep a simple list of every device, when it was bought, its specification and its warranty date. That makes it much easier to:
- Spread replacements across several years, so you are not hit with one big bill.
- Budget accurately for the year ahead.
- Prioritise the people who need more powerful machines.
- Make sure old devices are securely wiped before they are recycled or donated.
It is also worth thinking about how new devices are set up. With Microsoft 365 and tools such as Intune, new laptops can be configured, secured and ready for staff with far less hassle, and files stored in OneDrive or SharePoint move with the user rather than living on one machine.
How managed IT support helps
With remote monitoring in place, an IT provider can see warning signs such as failing drives, low disk space or missed updates before they cause downtime. A good provider will also keep your device inventory up to date, advise on what to buy and when, and handle setup and secure disposal, so replacement becomes a planned task rather than an emergency.
If you are not sure how your computers are holding up, or whether they are ready for the years ahead, we are happy to help. Cloud 4 Sure supports organisations across Sussex, Surrey, Hampshire and Kent, and we can carry out a free IT health check to give you a clear, honest picture of what can be kept, what can be upgraded and what is worth replacing. Get in touch with our team to arrange yours.