Last updated: 7 November 2026
Most PCs bought from about 2018 onwards can run Windows 11 if they have a supported 64-bit processor, 4GB of RAM, 64GB of storage, UEFI with Secure Boot and a TPM 2.0 chip. For an eligible Windows 10 PC the upgrade itself is free. The real cost is replacing machines that fail the check, plus the time to move your apps and data safely.
Windows 11 minimum requirements
| Requirement | Minimum | Common reason PCs fail |
|---|---|---|
| Processor | 1GHz, 2 or more cores, 64-bit, on the supported list | Older than roughly Intel 8th generation or AMD Ryzen 2000 |
| Memory | 4GB RAM | Very old or low-spec machines |
| Storage | 64GB or more | Small legacy drives |
| Firmware | UEFI with Secure Boot | PC still set to legacy BIOS |
| Security chip | TPM 2.0 | TPM missing or turned off in firmware |
What does it actually cost?
Licence
Free for eligible Windows 10 devices. New PCs include Windows 11.
Hardware
Only machines that fail the check need replacing. Many fail only on a firmware setting that can be fixed for free.
Time
Backups, app checks and a pilot group keep disruption low. Plan weeks, not days, for a whole office.
Risk of waiting
Paid Windows 10 security updates cost more each year, so delay is rarely cheaper.
How ABCOM helps
We run a fleet-wide readiness report, fix what can be fixed, and quote replacements only where needed. See our Windows 11 upgrade guide and Is Windows 10 still supported?
Quick answers
Can I upgrade an unsupported PC to Windows 11 anyway?
Workarounds exist, but Microsoft does not support them and may withhold updates. For a business device handling client data, we recommend replacing it instead.
How do I check if my PC is compatible?
Run the Microsoft PC Health Check app on the machine, or ask ABCOM for a report across every device in your business at once.
Want a list of exactly which PCs can upgrade and which need replacing?
Related answers and guides
- Is Windows 10 still supported?
- Which Microsoft products reach end of life in 2027?
- Upgrading to Windows 11
- What is Microsoft Intune?
- All ABCOM FAQs
Sources and further reading
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