I was thinking about this the other day…. in almost every office I walk into, there’s a laptop with a cracked corner, a battery that lasts about 40 minutes, and an employee who has just quietly accepted it. They plan their day around the charger. They reboot before every video call and hope. Nobody’s complained officially, so officially there’s no problem.
But here’s the thing, and I’m gonna be honest: that laptop is taxing your payroll every single day. Not in a dramatic way. In the slow, invisible way that never shows up on an invoice and absolutely shows up in your results. That’s why knowing when to replace business computers matters more than the sticker price of a new one.
And the timing couldn’t be more relevant. Microsoft ended free support for Windows 10 in October 2025, a year ago. If you’ve still got machines running it, or machines too old to run Windows 11, you’re not just dealing with slowness anymore. You’re dealing with computers the manufacturer has stopped protecting.
What an Old Computer Actually Costs You
Let me give you the number that changes this conversation. A study commissioned by Intel and conducted by the analyst firm Techaisle found that employees lose an average of 21 hours per year dealing with repairs, maintenance, and security issues on PCs that are four years or older, compared to newer machines. That’s more than half a work week, per employee, per year, gone to waiting, rebooting, and troubleshooting.
The repair math is just as ugly. Those older PCs need repairs 1.5 times more often, and the average repair bill on a five-year-old machine runs about $427. That’s not a tune-up, that’s real money approaching the cost of the replacement you were trying to avoid.
A separate Microsoft and Intel commissioned study in Canada put an even sharper point on it: keeping a PC past the four-year mark costs an average of CA$1,710 per device per year in lost productivity and extra maintenance. That’s more than the price of a new business laptop. Read that twice. The old computer costs more than the new computer.
Now, I know what you’re thinking, because every owner thinks it: “But it still works.” Sure. It turns on. It opens email. But “works” and “works well enough that your people aren’t bleeding time” are very different standards, and only one of them shows up in your payroll.
The Windows 10 Problem You Can’t Postpone Anymore
Here’s where this gets urgent instead of just expensive. Microsoft ended support for Windows 10 on October 14, 2025. That means no more free security updates, no more bug fixes, no more technical support for the world’s most-installed business operating system.
Your Windows 10 machines didn’t stop working that day. They just stopped getting protected. Every new vulnerability discovered from here on out stays open, permanently, on every unpatched machine. Attackers know this. They specifically target newly unsupported systems because the holes never close.
Microsoft does offer Extended Security Updates, a paid bridge program that delivers critical patches to enrolled Windows 10 devices, currently extended into 2027. But understand what that is: a temporary bridge, not a destination. You get security patches only. No features, no bug fixes, no support. And it does nothing about the fact that your aging hardware keeps getting slower, keeps breaking more often, and keeps failing to run the current versions of the software your team needs.
There’s a second trap hiding inside this one. Plenty of four and five-year-old PCs can’t run Windows 11 at all. Microsoft’s hardware requirements, the TPM chip, the processor generation, the secure boot, quietly disqualified millions of older machines. So for those computers, it’s not even a choice between upgrading the software or replacing the hardware. The hardware has to go.
6 Moves That Tell You When to Replace Business Computers
1. Find out what you’re actually running, right now.
You can’t plan a refresh from memory. Get a real inventory: every computer, its age, its operating system, whether it can run Windows 11, and whether it’s still getting security updates. This takes an afternoon with the right tools, and it usually surfaces surprises. In my experience, there’s always a machine everyone forgot about, running something ancient, holding something important.
2. Start the review at year three, not at failure.
Dell recommends refreshing business computers every three to four years, and Intel’s own IT organization lets employees pick replacements once their machines pass three years. These aren’t sales tactics, they’re planning horizons. At year three, check the warranty, the OS support timeline, the battery health, the repair history, and whether the machine still fits the employee’s actual work. A healthy three-year-old laptop doesn’t need replacing. It needs a decision and a date for the next review. That’s how you stop replacing six computers in the same panicked month.
3. Let security support decide, not speed.
This is the rule that overrides everything else. If a computer can’t run a supported operating system, it gets replaced, period. It doesn’t matter if it’s fast enough. It doesn’t matter if the employee likes it. An unpatched machine on your network is an open door, and no amount of antivirus changes that. Speed is a productivity question. Security support is a business survival question. Don’t confuse the two.
4. Diagnose the slow ones before you buy.
Not every slow computer is an old computer. A full drive, failing storage, too little memory, malware, or ten years of accumulated startup programs can make a two-year-old machine feel ancient. Have someone who knows what they’re doing identify the actual cause before you approve a replacement. An SSD swap or a memory upgrade can buy years of useful life for a fraction of the cost. But do the math honestly: don’t put $400 of upgrades into a machine that loses security support in eight months.
5. Stagger the spend so it never hurts.
The firms that handle this best replace roughly a third of their fleet each year. Every machine gets reviewed at three years, replaced at four or five depending on condition, and the cost spreads evenly instead of landing all at once. Budget a per-seat replacement number annually, even in years when nothing breaks. When the money’s already allocated, a refresh is a routine decision. When it isn’t, it’s a crisis purchase at the worst possible time.
6. Wipe it right on the way out.
Deleting files doesn’t delete data. Before any computer leaves your building, sold, donated, recycled, or returned, its storage needs proper sanitization. NIST’s Special Publication 800-88, revised in September 2025, lays out exactly how to do this based on the storage type and how sensitive the data was. Keep a disposal record: asset number, serial number, date, and the method used. For a law firm or CPA practice, this isn’t optional diligence, it’s a professional obligation. Your clients’ confidences don’t expire when the laptop does.
The Flip
Here’s the reframe I want you to sit with. Keeping that old laptop feels like saving money. It’s the frugal choice, the responsible choice. But the studies say otherwise, your employees’ lost hours say otherwise, and Microsoft’s support calendar says otherwise.
Flip it around: deciding when to replace business computers on a schedule isn’t spending, it’s buying back the 21 hours per employee per year you’re currently donating to old hardware. It’s trading unpredictable emergency purchases for a predictable annual number. It’s the difference between choosing your technology and being victimized by it.
That laptop with the cracked corner? It’s not a badge of frugality. It’s a slow leak in your payroll. Patch the leak.
If you’re not sure what’s still running Windows 10 in your office, which machines can even run Windows 11, or what a sane refresh schedule looks like for your headcount, book a 15-minute call. We’ll map it out together, no pressure, just a straight answer about where you stand. Or reach us at (717) 844-5406.
FAQ
Q: How long should a business laptop actually last?
A: When to replace business computers? Three to five years is the practical planning range. Three to five years is the practical planning range. Start reviewing at three years, plan replacement at four to five depending on condition, security support, and the employee’s workload. A lightly used machine in a low-demand role can stretch further. A daily driver’s laptop that’s traveled to a hundred job sites probably can’t. Age is the starting point, not the verdict.
Q: Can’t we just enroll our Windows 10 machines in Extended Security Updates and wait?
A: You can, and for some machines that’s the right short-term move. ESU buys you critical security patches into 2027 for enrolled devices. But it’s patches only, no features, no bug fixes, no support, and it costs money every year for protection that used to be free. More importantly, it doesn’t fix the hardware problem: the machine keeps aging, keeps slowing, and still can’t run Windows 11. Use ESU as a bridge while you execute a refresh plan, not as the plan itself.
Q: Should we replace all our computers at once?
A: Almost never. A rolling refresh, roughly a third of the fleet per year, spreads the cost, spreads the disruption, and means your IT team (or your IT provider) can properly set up each batch instead of rushing thirty machines in a week. The only exception is a genuine emergency, like discovering half your fleet can’t run a supported OS. If that’s you, call someone today, because that’s the emergency the rolling refresh was supposed to prevent.
Q: Is a slow computer always ready for replacement?
A: No, and this is where a lot of money gets wasted in both directions. Some slow computers need a $150 SSD, not a $1,200 replacement. Others have gotten three “repairs” this year and are telling you, loudly, that they’re done. The rule: diagnose first, then decide. If the machine is past four years, has repeat issues, or is nearing the end of OS support, replacement is usually the honest answer.
Q: Can we donate or sell our old computers?
A: Yes, but only after proper data sanitization, and keep the disposal records. For most business drives, that means following NIST SP 800-88 guidance for your storage type, not just deleting files or reformatting. If the machines held client financial records, legal documents, or anything regulated, consider a professional data destruction service and get a certificate. The $50 you save by skipping this step isn’t worth the conversation you’ll have if client data surfaces later.
Sources
- Intel/Techaisle Small Business PC Refresh Study via eWeek: 21+ hours lost per year on 4+ year PCs, 1.5x more frequent repairs, ~$427 average repair cost on 5+ year machines: https://www.eweek.com/small-business/older-pcs-drain-time-resources-from-small-businesses-intel/
- Microsoft/Intel/Techaisle Canada SMB study via Channel Daily News: CA$1,710 per device per year cost of keeping 4+ year PCs: https://channeldailynews.com/news/canadian-smbs-incur-a-potential-productivity-loss-of-ca2-billion-using-older-technology/69104
- Microsoft Learn: Windows 10 Home and Pro lifecycle, support ended October 14, 2025: https://learn.microsoft.com/en-us/lifecycle/products/windows-10-home-and-pro
- Microsoft Support: Windows 10 consumer Extended Security Updates (ESU) program: https://support.microsoft.com/en-us/windows/windows-10-consumer-extended-security-updates-esu-program-33e17de9-36b3-43bb-874d-6c53d2e4bf42
- Dell: PC lifecycle planning, refresh every 3-4 years: https://www.dell.com/no-no/dt/pc-lifecycle/plan-design.htm
- NIST SP 800-88 Rev. 2 (September 2025): Guidelines for Media Sanitization: https://csrc.nist.gov/pubs/sp/800/88/r2/final
