Why Windows 11 Will Leave Millions of PCs Behind

Why your “too old” computer might be perfect for a better, freer operating system

🚨 The Problem: Windows 11 Won’t Run on Many PCs

If you’ve seen the message “This PC can’t run Windows 11”, you’re not alone.
Microsoft’s newest operating system has strict hardware requirements that block millions of computers — even some that still feel fast and reliable.

Windows 11 demands newer security chips, newer processors, and modern firmware that most older machines just don’t have.

So what happens when Windows 10 stops getting updates in October 2025?
Many users will be told their computer is “obsolete”… even though it still works perfectly.

🧱 What’s Changed: The New Barriers in Windows 11

🔒 TPM 2.0 Security Chip Required

Windows 11 refuses to install unless your PC has a TPM 2.0 chip (Trusted Platform Module).
Older computers either don’t have one or use the older TPM 1.2 version — and there’s no software fix.

⚙️ Only Modern CPUs Allowed

Windows 11 only supports newer Intel (8th gen or newer) and AMD Ryzen 2000+ chips.
If your processor is older, even by one generation, Microsoft blocks the upgrade.

🧩 UEFI and Secure Boot Only

The new Windows won’t install on systems with legacy BIOS firmware.
You must use UEFI with Secure Boot, which older systems often lack.

These rules have nothing to do with performance — they’re about Microsoft’s new hardware-based security model.

⏰ The Countdown: Windows 10 Ends October 2025

After that date, no more security updates or fixes.
Your computer will still run, but using it online will become increasingly unsafe.

So, if your PC can’t run Windows 11, you have three options:

Buy a new computer 💸
Risk using an unsupported Windows 🔓
Switch to Linux 🐧 — a free, secure, privacy-focused system that runs beautifully on older hardware

Here are a few of the more widely cited figures:

Source	Estimate / Finding	Notes & Limitations
Lansweeper (IT-asset survey of ~30 million devices)	~55 % of devices cannot upgrade to Windows 11 via automatic upgrade	They break it down: 44.4 % of CPUs they surveyed met Microsoft’s CPU requirement; TPM was often the biggest blocker. antech.support
HotHardware summary of that survey	Only ~44.4 % of CPUs are eligible; about 52.6 % of systems meet TPM requirement	Confirms TPM is a big hurdle in real deployments. HotHardware
Winaero / related reporting	Among professional PCs, less than half are ready for Windows 11	For instance, CPU compatibility rates around 44–45 %. winaero.com
TechTimes / media commentary	Claims “more than 55 % of workstations” will be incompatible	Based on the same Lansweeper data. Tech Times

So, a repeated result is that over half of existing Windows devices (especially in business or enterprise fleets) may fail one or more of the strict requirements (CPU generation, TPM 2.0, firmware features) needed for full Windows 11 compatibility.

Beyond those surveys, most public data is fragmented or speculative — manufacturers and Microsoft do not typically publish a definitive “percentage of all PCs that are incompatible” number.

⚠️ Important Caveats & Context

“Cannot upgrade” vs “won’t be supported”: The surveys usually refer to automatic, official upgrade eligibility (i.e. meeting Microsoft’s “supported” checklist). Many machines might be able to run Windows 11 through manual workarounds or unofficial paths — but with risks (no updates, stability, etc.).
Business vs consumer mix: Many of these surveys focus on corporate / professional machines, which tend to lag in adopting new hardware. Consumer PCs (especially newer ones) may have a somewhat higher compliance rate.
Uncertainty on TPM / BIOS enablement: Even if hardware supports TPM 2.0, many devices have it disabled in firmware, making them “non-compliant” until flipped on.
Time / evolving requirements: Microsoft might continue tightening rules or patching bypass methods, so machines that “work today” may get cut off later.
Geographic / market variability: Older computers are more common in lower-income markets, education institutions, or regions with slower hardware turnover. So the percentage incompatible will vary by country, sector, etc.

📊 Rough Estimate & What It Implies

Given the consistency across surveys, a reasonable working estimate is:

Perhaps 40 % to 60 % of active Windows PCs may not satisfy Microsoft’s full Windows 11 hardware requirements (at least without intervention).

For many business fleets or institutions with older hardware, that share could tilt even higher.

That means a large number of perfectly functional PCs might be “left behind” unless owners:

Replace hardware
Enable/upgrade TPM or firmware features
Use workarounds (at risk)
Switch operating systems (e.g. Linux)

🐧 Meet Linux: The OS That Keeps Your Computer Alive

Linux is an open-source operating system — the foundation of Android phones, smart TVs, and most of the internet’s servers.
It’s built by communities around the world, not controlled by a single company.

🌿 Runs Great on Older PCs

Linux doesn’t need fancy new hardware.
Even a 10-year-old computer can feel fast again.
There are lightweight versions (like Linux Mint Xfce, Zorin OS Lite, or Ubuntu MATE) that revive older laptops and desktops.

🔒 Secure by Design

Linux is far less targeted by malware and ransomware than Windows.
It’s built with strong user permissions — viruses can’t easily install themselves.

🕵️ Enhanced Privacy

No telemetry, no background data collection, no ads in your Start menu.
You control what runs on your computer, and nobody is tracking what you do.

💰 Free Forever

Linux costs nothing to download, install, or use.
You’ll never pay for “Pro” editions or be forced into hardware upgrades.

💬 Familiar and Friendly

Modern Linux systems are easy to use — with app stores, web browsers, office suites, and software installers that feel just like Windows.
If you can use Chrome, Word, and File Explorer, you’ll feel right at home.

🪛 What You Can Do Right Now

Check Your PC
Use Microsoft’s PC Health Check to see if it supports Windows 11.
If it doesn’t — no worries, that means you’re a great Linux candidate.
Try Linux Without Replacing Windows
Most Linux installers let you “try before installing.”
You can boot from a USB stick and explore Linux without touching your hard drive.
Pick a User-Friendly Version
- Zorin OS — modern design, great for beginners
- Ubuntu — simple and widely supported
Install or Dual-Boot
You can install Linux alongside Windows or replace it completely.
The installation process is guided, simple, and takes less than an hour.

💾 Why People Are Making the Switch

Windows 11	Linux
Requires new hardware	Runs on nearly anything
Collects user data	Respects your privacy
Costs money or upgrades	Completely free
Fewer customization options	Fully customizable
Controlled by Microsoft	Controlled by you

🔮 The Bottom Line

Microsoft’s hardware rules may make sense for big corporations, but for everyday users, they leave millions of computers behind.

Instead of sending your PC to the landfill or paying for costly upgrades, Linux gives you a way forward — fast, secure, and private.

Your computer isn’t obsolete.
It just needs an operating system that respects it — and you.

🧭 Final Thought

Windows 11 might lock out older PCs, but Linux opens the door again —
no new hardware, no tracking, no strings attached.

If you’re ready to keep your computer alive and your privacy intact,
Linux isn’t just an alternative — it’s an upgrade.