Check your system requirements before upgrading

Windows 11 has stricter hardware requirements than Windows 10, and your computer may not meet them even if it runs Windows 10 smoothly. The main barriers are a processor from 2017 or later, at least 4 GB of RAM, 64 GB of storage, and a TPM 2.0 chip — a security module that many older machines lack. Microsoft provides a free tool called the PC Health Check app that scans your computer and tells you exactly what you have and what you're missing.

You can also check your specs manually by looking at your device settings, though the Health Check app is faster and more reliable. If your computer doesn't meet the requirements, Windows 11 simply won't install, so it's worth checking before you spend time on an upgrade.

Key Takeaways

  • Download the PC Health Check app from Microsoft's website to scan your computer in about one minute and see which requirements you meet or fail.
  • Windows 11 requires a compatible processor (Intel 8th gen or newer, AMD Ryzen 2000 series or newer), TPM 2.0, 4 GB RAM, and 64 GB storage.
  • If you don't have TPM 2.0, you can sometimes enable it in your BIOS settings, but some older computers don't have the hardware at all.
  • You can check your processor, RAM, and storage manually through Windows Settings if you prefer not to use the Health Check app.

Using the PC Health Check app

The PC Health Check app is the fastest way to see whether your computer meets Windows 11 requirements. Go to Microsoft's official Windows 11 system requirements page, scroll down to find the download link for PC Health Check, and run the installer. The app takes about a minute to scan your system.

Once it finishes, you'll see a green checkmark next to each requirement your computer passes and a red X next to anything it fails. The app also explains what each requirement is and why it matters. If you fail any requirement, the app tells you what you have (for example, "TPM version 1.2") and what you need (TPM 2.0).

Save or screenshot the results so you have them if you decide to contact your computer manufacturer or a repair shop about upgrading specific parts.

Checking your processor manually

Your processor is the most common reason computers can't run Windows 11. Windows 11 requires Intel processors from the 8th generation or newer, or AMD Ryzen processors from the 2000 series or newer. Older processors, even if they're powerful, won't work.

To find your processor, right-click the Start button, select "System," and look for "Processor" in the window that opens. You'll see something like "Intel Core i7-8700K" or "AMD Ryzen 5 3600." The number after "Core i" or "Ryzen" tells you the generation — an i7-8700K is 8th generation (compatible), while an i7-7700K is 7th generation (not compatible).

If you're not sure whether your processor qualifies, search the exact model name plus "Windows 11 compatible" online, or check Microsoft's official list of supported processors on their Windows 11 system requirements page.

Checking RAM and storage

Windows 11 requires at least 4 GB of RAM and 64 GB of storage space. Both of these are easy to check in your system settings. Right-click the Start button, select "System," and scroll down to "Device specifications." You'll see your installed RAM listed as "Installed RAM" and your storage under "System type."

If you have less than 4 GB of RAM, Windows 11 won't install. If you have less than 64 GB of storage, you can still install Windows 11, but you'll have very little room for programs and files afterward. Many people with 64 GB drives find they run out of space quickly once Windows 11 is installed.

If your computer is short on either, you can sometimes upgrade RAM or add a larger hard drive, though this requires opening your computer or paying for professional installation.

Understanding TPM 2.0

TPM 2.0 (Trusted Platform Module 2.0) is a security chip that encrypts sensitive data on your computer. Windows 11 requires it, but many computers from before 2018 don't have it. This is the requirement that stops the most people from upgrading, even if their processor and RAM are fine.

To check whether your computer has TPM 2.0, right-click the Start button, select "System," scroll down, and click "Device specifications." Look for "TPM version" — if it says 2.0, you're good. If it says 1.2 or nothing at all, you don't have it.

If your computer has TPM but it's disabled, you can turn it on through your BIOS settings (the firmware menu that runs before Windows starts). Restart your computer and watch for a message like "Press Delete to enter Setup" or "Press F2 to enter BIOS." Once inside, look for a setting called "TPM," "PTT," or "Security Chip" and enable it. The exact steps vary by manufacturer, so search your computer model plus "enable TPM" if you're not sure.

If your computer doesn't have TPM 2.0 hardware at all, you cannot add it — you would need a new computer or motherboard.

What to do if your computer doesn't may have access to

If the PC Health Check app shows you don't meet the requirements, you have a few options. First, check which specific requirement you're failing. If it's just TPM, you may be able to enable it in BIOS. If it's RAM or storage, you can sometimes upgrade those parts yourself or have a repair shop do it for you.

If your processor doesn't may have access to, upgrading is usually not worth the cost — replacing a processor requires technical skill and often means replacing the motherboard too. In that case, Windows 11 simply isn't an option for your current computer, and you'll need to stick with Windows 10 (which is still supported and secure) or buy a new computer.

You can also check whether your computer manufacturer has released a BIOS update that might add TPM 2.0 support or enable it by default. Visit your manufacturer's support website, search for your exact model number, and look for BIOS updates in the downloads section.

Checking storage space before upgrading

Even if your computer meets the minimum 64 GB storage requirement, you should have extra free space before you upgrade. Windows 11 installation uses temporary space, and the upgrade process itself can fail if your drive is nearly full.

To check how much free space you have, right-click your C: drive in File Explorer and select "Properties." You'll see a bar showing used and free space. If you have less than 20 GB free, delete old files, programs you don't use, or move large files to an external drive before upgrading.

After Windows 11 is installed, you'll want at least 10 GB free for Windows updates and system files. If you're close to that limit, consider upgrading your storage before upgrading your operating system.

Frequently Asked Questions

Can I upgrade to Windows 11 if my processor is just one generation too old?

No. Windows 11 requires Intel 8th generation or AMD Ryzen 2000 series as a hard minimum. A 7th generation Intel processor or first-generation Ryzen will not work, even if it's otherwise powerful. Microsoft enforces this requirement at installation, and there's no workaround.

What if the PC Health Check app won't open or gives an error?

Try restarting your computer and running the app again. If it still doesn't work, you can check your specs manually through Settings instead. Right-click the Start button, select "System," and review your processor, RAM, and TPM version. You can also search "dxdiag" in the Start menu to open the DirectX Diagnostic Tool, which shows detailed hardware information.

Can I enable TPM 2.0 if my computer doesn't have it?

Only if your computer has the hardware but it's disabled in BIOS. If your computer was made before 2018 and has no TPM at all, you cannot add it without replacing the motherboard. Check your BIOS settings first — search your computer model plus "enable TPM" for exact steps.

Do I have to upgrade to Windows 11 if my computer doesn't may have access to?

No. Windows 10 is still fully supported and secure. You can continue using Windows 10 for several more years. Windows 10 support ends in October 2025, but that's still plenty of time to plan your next computer purchase if you want Windows 11.

Will upgrading my RAM or storage help me run Windows 11?

Upgrading RAM or storage won't hurt, but it won't solve a processor or TPM problem. If your processor is too old or you don't have TPM 2.0, more RAM and storage won't make Windows 11 install. Check which requirement you're failing first before you spend money on upgrades.