Slow computers kill productivity. When an employee spends 10 minutes waiting for a machine to boot, 3 minutes waiting for a file to open, and another 5 minutes watching a spinning cursor — that's real money disappearing. But not every slow computer needs replacing. Here's the framework we use at Starcomm when clients ask us this exact question.
The 50% Rule
The simplest guideline: if a repair costs more than 50% of what a comparable replacement would cost, replace it. A repair that costs $400 on a $600 computer doesn't make economic sense — especially when the repaired machine is still aging and will likely need another repair soon.
Age Matters More Than You Think
Hardware has a practical lifespan. For business computers:
- Under 3 years old: Almost always worth repairing, hardware is current and under warranty
- 3–5 years old: Repair if it's a single component failure. Consider replacing if it's a second or third issue.
- Over 5 years old: Replace. Parts are harder to source, compatibility with modern software degrades, and security updates may be ending.
- Over 7 years old: Replace immediately. A computer this old likely can't run Windows 11, can't receive security patches, and is a compliance risk.
We once audited a dental office running 6-year-old workstations. Their imaging software was so slow on those machines that each X-ray took 4 minutes to load. Replacing them with modern PCs brought that down to 8 seconds. That alone recovered 30+ minutes per day per operatory.
Clear Signs It's Time to Replace
- The computer can't run Windows 11 (after October 2025, Windows 10 receives no security updates)
- RAM can't be upgraded further and 8GB isn't enough for your software
- You've repaired this machine 2+ times in the last 2 years
- The hard drive has failed or is showing SMART errors — imminent failure
- The machine takes more than 3–4 minutes to fully boot and be usable
- It can't run your current business software at acceptable speed
When Repair Makes Good Sense
- Single component failure on a machine less than 4 years old (power supply, RAM, SSD)
- Software issues causing slowness (malware, bloatware, fragmented drive) — a clean OS install can make a 3-year-old machine feel new
- Screen or keyboard replacement on a laptop that's otherwise healthy
- Adding RAM or upgrading from HDD to SSD — this is often the best-value upgrade you can make, typically $150–$250 and doubles perceived speed
The Hidden Cost of Old Hardware
Even when old computers aren't visibly broken, they have hidden costs that justify replacement:
- Productivity loss: If a machine wastes 30 minutes/day, that's 130+ hours/year per employee
- Security risk: Old hardware often can't run modern security software effectively
- Staff morale: Employees frustrated with slow tech perform worse and are more likely to leave
- IT support time: Old machines generate disproportionate IT tickets — time that costs money
Our Recommendation for Business Refreshes
We recommend a rolling hardware refresh cycle where 20–25% of your computers are replaced each year. This keeps your average machine age under 4–5 years without a single large capital outlay. Many of our managed IT clients budget this as a monthly operational expense rather than a surprise capital cost — making it far more predictable.