Windows 10 support ended on October 14, 2025, and that single date pushed millions of people to ask the same question: will my computer run Windows 11, or do I need new hardware? Microsoft’s own PC Health Check app was downloaded so heavily after its 2021 launch that the company briefly pulled it offline. The lesson is simple: most people don’t know whether their machine qualifies until they look.
The good news is that checking takes about ten minutes. The bad news is that Microsoft’s requirements are stricter than most people expect, and being “fast enough” doesn’t count. This guide walks through exactly what to check, in what order, and what to do when something fails.
Why So Many PCs Fail the Check
Windows 11 isn’t just a bigger Windows 10. Microsoft drew a hard line on security hardware. When the requirements were announced on June 24, 2021, the two items that disqualified the most machines were TPM 2.0 (Trusted Platform Module) and Secure Boot with UEFI firmware.
Here’s what Microsoft requires at minimum:
| Requirement | Minimum |
|---|---|
| Processor | 1 GHz or faster, 2+ cores, 64-bit, on Microsoft’s approved list |
| RAM | 4 GB |
| Storage | 64 GB |
| Firmware | UEFI with Secure Boot capable |
| Security | TPM version 2.0 |
| Graphics | DirectX 12 with WDDM 2.0 driver |
| Display | 9-inch or larger, 720p resolution |
| Setup | Internet access and a Microsoft account |
Notice the processor line. It doesn’t say “any 64-bit chip.” It says the specific model must appear on Microsoft’s published list of supported Intel, AMD, and Qualcomm processors. A fast, perfectly healthy CPU from 2017 can still be blocked simply because Microsoft never added it.
That’s why the first step isn’t guessing. It’s measuring.
Step 1: Run the Official PC Health Check App
Microsoft’s PC Health Check tool is the fastest starting point. It scans your hardware, tells you whether the PC is eligible, and, when it fails, explains which requirement caused the problem.
The tool had a rocky start. It launched in June 2021, was pulled almost immediately because its explanations were vague, and returned in improved form in August 2021. The current version gives specific failure reasons, which makes it far more useful.
Common mistake: people download a third-party “Windows 11 checker” from an ad or a random download site. Don’t. Stick to Microsoft’s official page. If you want to understand how to spot risky downloads in general, the same instincts apply as when you learn how to check whether an apk file is safe on Android: verify the source before you run anything.
Step 2: Confirm Your Processor Is Actually on the List
Open Settings > System > About, or press Windows key + R, type `msinfo32`, and hit Enter. You’ll see the exact processor model, something like “Intel Core i5-8250U” or “AMD Ryzen 5 3600.”
Write that model down and compare it against Microsoft’s official supported processor pages for Intel, AMD, and Qualcomm. This is where most surprises happen.
There’s a wrinkle worth knowing. Windows 11 version 24H2, released in 2024, raised the baseline. Some older chips that appeared on the original 2021 list, including certain Intel 8th-generation parts and some first-generation AMD Zen processors, are no longer supported for new installations. If your PC is right at the edge of the list, check the current documentation rather than a blog post from 2021.
If your CPU isn’t listed, no amount of RAM or storage will change the outcome. That’s the single most important thing to understand about this process.
Step 3: Check TPM 2.0 (The Most Common Blocker)
TPM is a small security chip, or a firmware-based equivalent, that stores encryption keys and helps verify your device’s integrity. Windows 11 requires version 2.0.
To check:
- Press Windows key + R, type `tpm.msc`, and press Enter.
- Look at the Status and Specification Version fields.
- If it says “Specification Version 2.0” and the status is ready, you’re set.
- If it says “TPM is not present” or shows version 1.2, keep reading.
You can also open PowerShell and run `Get-Tpm` for a more detailed readout.
Here’s the part that trips people up: many PCs have TPM 2.0 but it’s disabled in the BIOS or UEFI firmware. Manufacturers sometimes ship with it off, especially on custom-built machines and some business laptops. The fix is usually a firmware setting labeled “PTT” (Intel Platform Trust Technology), “fTPM” (AMD firmware TPM), or simply “TPM Device.”
Before you touch firmware settings, back up your files. A firmware update is also sometimes required to expose the TPM option at all, and those updates come from your PC or motherboard manufacturer. If you’re the type who likes having recovery tools ready, it’s worth knowing the undo shortcut key for Windows and Mac so a mis-click in a settings menu doesn’t cost you an afternoon.
Step 4: Verify UEFI and Secure Boot
Open `msinfo32` again and look at two lines: BIOS Mode and Secure Boot State.
- BIOS Mode must say UEFI. If it says Legacy, your drive is partitioned in the old style and Windows 11 setup will refuse to proceed without a conversion.
- Secure Boot State should say On. If it says Off, you can usually enable it in firmware settings, but only if your installation is compatible. Turning Secure Boot on for a legacy installation can prevent the machine from booting.
This is the step where people most often create problems for themselves. Changing BIOS mode from Legacy to UEFI on an existing Windows installation requires converting the disk from MBR to GPT, and doing it wrong can leave a PC unbootable. If you’re not comfortable with partition tools, this is a reasonable moment to get help.
Step 5: Check RAM, Storage, and Graphics
These are the easy ones.
- RAM: 4 GB minimum. Open Task Manager, go to the Performance tab, and check. Most PCs from the last eight years pass.
- Storage: 64 GB minimum free space on the target drive. Note that Windows itself plus updates will eat a large chunk of that, so 64 GB is a floor, not a comfortable target.
- Graphics: DirectX 12 with a WDDM 2.0 driver. Press Windows key + R, type `dxdiag`, and check the DirectX Version line on the System tab. Nearly all hardware from 2015 onward qualifies.
If your machine is older and running hot or slow, it’s worth a separate check on thermals before you commit to a major upgrade. Our walkthrough on how to check GPU temperature in 13 steps covers that without any special tools.
What to Do If Your PC Fails
Failure usually falls into one of three buckets, and each has a different answer.
Fixable with settings. TPM disabled, Secure Boot off, or Legacy BIOS mode. These are firmware changes, and most PCs from 2018 onward can be brought into compliance. Update your firmware first, then enable the settings.
Fixable with hardware. Not enough RAM or storage. A RAM stick or a larger SSD is cheap compared to a new PC. This is the best-case failure.
Not fixable. An unsupported processor. Microsoft has been firm that the CPU list is a hard requirement, and while registry workarounds like the `LabConfig` `BypassTPMCheck` values circulated widely in 2021, Microsoft’s position has consistently been that unsupported installations aren’t entitled to support and may miss updates. Treat that path as a hobbyist experiment, not a plan.
For a PC that fails on the processor, the realistic options are staying on Windows 10 with Extended Security Updates while you can, moving to Linux, or replacing the machine.
A Word on Windows 10 End of Support
Microsoft ended standard support for Windows 10 on October 14, 2025. That means no more free security patches for the general consumer base. Extended Security Updates exist, but the terms and consumer pricing have shifted repeatedly, so check Microsoft’s current end-of-support page rather than relying on older coverage.
This deadline is the real reason the compatibility question matters. A PC that can’t run Windows 11 isn’t just missing a feature; it’s heading toward an unpatched state. If you’re weighing whether to keep using an older machine, it’s worth pairing that decision with a proper security review. Learning how to check for viruses on a Windows PC and having the best free virus removal tools for Windows on hand becomes considerably more important once automatic updates stop.
Common Mistakes That Waste Time
A few patterns show up again and again.
Trusting the sticker, not the settings. A “Windows 11 Ready” badge on a retail box tells you nothing about the specific unit you bought, especially refurbished ones.
Skipping the firmware update. TPM and Secure Boot options sometimes don’t appear in BIOS until the firmware is current. People conclude their board doesn’t support TPM 2.0 when it simply needs an update first.
Using third-party checkers. Some are fine, many bundle adware. The official tool and built-in Windows utilities cover everything.
Assuming a fast CPU passes. This is the big one. A 2016-era Core i7 can be faster than a supported modern chip and still be blocked. The list is about the model, not the benchmark.
Forgetting the Microsoft account requirement. Setup for Windows 11 Home expects an internet connection and a Microsoft account. Offline installation workarounds exist but Microsoft has been closing them.
How Long Does the Check Take?
Realistically, ten to fifteen minutes if everything passes. Plan for an hour if you need to update firmware and change BIOS settings, and add time for a backup before you touch anything in firmware.
The order matters: run the official checker first, confirm the processor against Microsoft’s list second, then work through TPM, Secure Boot, and the hardware minimums. Doing it in that sequence means you find a dealbreaker early instead of after an hour of BIOS fiddling.
Conclusion
Checking Windows 11 compatibility isn’t complicated, but it is unforgiving. The processor list is the gatekeeper, TPM 2.0 is the most common stumble, and Secure Boot is where careful people accidentally break their boot configuration. Run Microsoft’s PC Health Check, verify your exact CPU model against the current supported list, and confirm TPM and UEFI status in `msinfo32` and `tpm.msc` before you download anything.
If your machine passes, upgrade while you still have time and a supported Windows 10 to fall back on. If it fails on settings, fix them. If it fails on the processor, accept the answer early and put the money toward hardware that will last another five years. Either way, you’ll know within fifteen minutes instead of wondering for another year.
Frequently Asked Questions
Can a PC with an unsupported processor still install Windows 11?
Technically, yes, using registry workarounds that bypass the TPM and CPU checks. Microsoft has stated that such installations aren’t supported, may not receive updates, and aren’t entitled to technical support. It’s a legitimate experiment for a spare machine, but a poor choice for a computer you depend on.
Is TPM 2.0 a physical chip I need to buy?
Usually not. Most PCs from around 2016 onward have either a discrete TPM chip or a firmware-based implementation (Intel PTT or AMD fTPM). If `tpm.msc` says TPM isn’t present, check your BIOS for a TPM or PTT setting, and update your firmware if the option is missing.
Why does my fast processor fail the compatibility check?
Because Microsoft’s requirement is a specific model list, not a performance threshold. A processor must appear on Microsoft’s published list of supported Intel, AMD, or Qualcomm chips. Many capable older CPUs were never added, and version 24H2 in 2024 removed some models that were originally included.
Does enabling Secure Boot break my existing Windows installation?
It can, if Windows was installed in Legacy BIOS mode with an MBR-partitioned drive. In that case, switching to UEFI and enabling Secure Boot requires converting the disk to GPT first. Check the BIOS Mode line in `msinfo32` before changing anything.
How much storage does Windows 11 actually need?
Microsoft lists 64 GB as the minimum. In practice, that leaves very little headroom once Windows, updates, and a few applications are installed. Most technicians recommend at least 128 GB, and 256 GB is a far more comfortable starting point.
What happens to my PC if I stay on Windows 10?
Standard support ended on October 14, 2025, so consumer machines no longer receive regular security updates. Extended Security Updates are available under terms that have changed over time, so check Microsoft’s current end-of-support page. Running an unpatched system long term raises real security risk.
