A Supported Processor
Microsoft publishes a list of supported processors. Many chips from several years ago are not on it. This is the most common reason a computer fails the check.
Windows 11 Guide
How to Upgrade to Windows 11 and What to Do If Your PC Is Not Eligible
Windows 10 no longer receives regular free security updates, so many people are finally making the move. Knowing how to upgrade to Windows 11 safely saves you from lost files and wasted evenings. This guide covers eligibility checks, the upgrade itself and your honest options if your computer does not qualify.
- Free Upgrade Paths
- Eligibility Explained
- Backup First Approach
- Options for Older PCs
Why Upgrade
Why Should You Upgrade to Windows 11?
Security is the biggest reason. Without regular updates, newly discovered weaknesses in Windows 10 stay open. Over time, that makes banking, shopping and email riskier on an older system.
Software support matters too. As time passes, app makers gradually drop older versions of Windows. Eventually, browsers and important programs stop updating on them.
Windows 11 also brings a refreshed design, better window snapping and improved security features. For most people, it feels familiar within a day or two. The core way you use your computer stays much the same.
For eligible computers, the upgrade from a genuine Windows 10 licence has been free. So in many cases, the only real cost is your time.
Before You Start
Back up everything. Copy files to an external drive or cloud storage.
Note your passwords. Especially your Microsoft account.
Free up space. The upgrade needs room to unpack.
Plug in the charger. Never upgrade a laptop on battery alone.
Allow plenty of time. Start when you will not need the computer.
Eligibility
Can My Computer Run Windows 11?
Windows 11 has stricter hardware rules than Windows 10. These are the parts that most often decide whether a computer qualifies.
TPM Security Chip
Windows 11 needs a security feature called TPM version 2.0. Many computers have it but ship with it switched off. You can often turn it on in the BIOS settings.
Secure Boot Support
The computer must support Secure Boot through modern UEFI firmware. Older systems using legacy BIOS mode may need a settings change. Some very old machines cannot do it at all.
Memory and Storage
Windows 11 needs at least 4 GB of memory and 64 GB of storage. In practice, more of both makes for a much smoother experience. A solid state drive helps enormously.
Checking Tools
How Do You Check Windows 11 Compatibility?
You do not need to read spec sheets line by line. Microsoft offers simple tools that do the checking for you.
Use Windows Update
Open Settings, then Update and Security, then Windows Update. If your computer qualifies, you may see a message offering Windows 11. That is the easiest sign of eligibility.
Run PC Health Check
Download the free PC Health Check app from the official Microsoft website. Select Check now under the Windows 11 section. It explains exactly which requirement, if any, your computer misses.
Look Closer at a Failed Result
If the tool mentions TPM or Secure Boot, the fix may be simple. Both settings live in the BIOS or UEFI menu. However, if the processor is unsupported, a settings change will not help.
Not sure how to find your processor details? Our guide on checking specs in Windows walks through it, and Task Manager shows the processor name on its Performance tab.
Turning On TPM and Secure Boot
Open the BIOS. Use the key your computer maker specifies.
Find security settings. TPM may be named PTT or fTPM.
Enable it. Save and exit, then rerun the check.
Take care with boot mode. Switching to UEFI can stop Windows loading if the drive is not prepared.
The Upgrade
How to Upgrade to Windows 11 Step by Step
Once your computer passes the check, the upgrade itself is fairly simple. Follow these steps for a smooth move.
Back Up Your Files
Copy documents, photos and anything irreplaceable to an external drive. Cloud storage is a useful second copy. Upgrades usually keep files, yet backups remove all worry.
Update Windows 10 First
Install every pending Windows 10 update and restart. This prepares the system and reduces the chance of errors during the upgrade.
Update Drivers and BIOS
Visit your computer maker support site for the latest drivers and firmware. Current drivers help Windows 11 recognise your hardware properly.
Start the Upgrade
If Windows Update offers Windows 11, select Download and install. Otherwise, use the Windows 11 upgrade assistant, which Microsoft calls the Installation Assistant, from the official download page.
Let It Run
The computer restarts several times during the process. Keep it plugged in and do not switch it off. Grab a cuppa and let it work.
Check Everything Afterwards
Sign in, open your key apps and confirm your files are present. Then run Windows Update again to collect any new drivers and fixes.
Troubleshooting
What If the Windows 11 Upgrade Fails?
Most upgrades finish without a hitch. When one does fail, Windows usually rolls back safely, and a few checks often get it over the line.
Not Enough Space
Feature upgrades need generous free space to unpack. If the upgrade stops early, clear temporary files and move large folders to an external drive. Then try again.
Incompatible Software
Older antivirus tools and system utilities can block the upgrade. The installer usually names the program causing trouble. Uninstall it, finish the upgrade and reinstall a current version afterwards.
Old Drivers
Outdated storage or graphics drivers sometimes stop the process part way through. Updating them from your computer maker first avoids most of these errors. As a result, the second attempt often succeeds.
Connected Devices
External drives, card readers and docks can confuse the installer. Therefore, disconnect everything except the keyboard, mouse and charger before you start. You can plug them back in once the upgrade is complete.
Error Codes
If the upgrade shows an error code, note it down and search for it on the Microsoft support site. The explanation usually points directly to the fix. Keep that note handy in case you need help later.
Not Eligible
What If Your PC Cannot Upgrade to Windows 11?
Finding out your computer does not qualify is frustrating, especially when it still works well. However, you have several options, and each suits a different situation.
Keep Using Windows 10 Carefully
The computer will keep working, although it no longer gets regular free security fixes. If you choose this route, avoid sensitive tasks such as online banking on it. Keep your browser and antivirus updated for as long as they support it.
Look at Paid Extended Updates
Microsoft has offered paid extended security updates for Windows 10 in some situations, particularly for businesses. Check the official Microsoft website for current availability. It buys time rather than solving the problem.
Replace the Computer
For older machines with unsupported processors, a new computer is often the practical answer. You gain Windows 11 plus faster hardware. Our repair or replace guide helps you weigh this up.
Consider Another Operating System
Some people give older computers a new life with a lightweight system such as a Linux distribution. It suits basic browsing and documents well. However, it involves a learning curve and may not run all Windows apps.
A Word on Workarounds
Unsupported installs exist. Microsoft does not recommend them.
Updates may not arrive. Unsupported PCs are not guaranteed updates.
Stability can suffer. Drivers may be missing or unreliable.
Avoid unofficial downloads. They can carry malware.
After the Upgrade
What Should You Do After Upgrading?
The first few days on Windows 11 are a good time for a quick tidy up. A little setup now makes the new system feel faster and more familiar.
Review Startup Apps
Upgrades sometimes carry old startup items across. Open Settings, then Apps, then Startup, and switch off what you do not need. The computer will start more quickly.
Move the Start Button if You Like
Windows 11 centres the taskbar icons by default. If you prefer the classic layout, taskbar settings let you align them to the left. It is a small change that helps many people settle in.
Check Privacy Settings
Take a few minutes to look through the Privacy and security section. Turn off anything you are not comfortable sharing. These choices are yours to make.
Going Back Is Possible for a While
For a limited period after upgrading, Windows lets you return to Windows 10 through the Recovery settings. After that period ends, going back requires a clean install. So test your important apps early.
If It Feels Slow
Give it a day
Indexing and updates run in the background at first.
Check the drive
Mechanical drives struggle with Windows 11.
Watch memory use
More memory can make a real difference.
Getting Help
Would You Rather Someone Handled It?
Upgrading is straightforward for many people, but not everyone wants to spend an evening on it. A technician can check eligibility, back up your files and complete the upgrade for you.
They can also enable TPM and Secure Boot safely, fit a solid state drive for better performance and transfer your data if a new computer makes more sense. That way, you get a working system without the stress.
For quick turnarounds, our same day laptop service covers software work like this. If your laptop is also sluggish, see our slow laptop fix page.
Handy Extras
Data transfer. Moving files to a new computer.
Drive upgrade. Faster storage before the move.
Setup help. Email, printers and apps ready to go.
Common Questions
Windows 11 Upgrade Questions Answered
Plain answers to the questions people ask most before upgrading.
Is the Windows 11 upgrade free?
For eligible computers with a genuine Windows 10 licence, the upgrade has been free through Windows Update. Check the official Microsoft website for current details.
Will I lose my files when upgrading?
A standard upgrade keeps your files and most apps. Even so, always back up first in case something goes wrong.
Why does my PC say it cannot run Windows 11?
Usually, the processor is not supported, or TPM and Secure Boot are switched off. PC Health Check tells you which requirement is missing.
How long does the Windows 11 upgrade take?
It depends on your internet speed and hardware. Newer computers with solid state drives finish much faster than older machines.
What is the Windows 11 upgrade assistant?
It is the Installation Assistant tool from Microsoft. It upgrades an eligible Windows 10 computer when Windows Update has not offered the upgrade yet.
Can I go back to Windows 10?
Yes, for a limited period after upgrading, through the Recovery settings. After that, returning requires a fresh installation.
Is it safe to keep using Windows 10?
It still works, but without regular security updates the risk grows over time. Avoid sensitive tasks on it and plan your next step.
Will Windows 11 slow down my computer?
On eligible hardware, it usually runs well. Older mechanical drives or low memory can make it feel slow, and upgrades to those parts help.
Summing Up
Moving Forward With Confidence
Learning how to upgrade to Windows 11 starts with one simple step, checking eligibility. PC Health Check and Windows Update tell you quickly whether your computer qualifies.
If it does, back up, update drivers and run the upgrade through Windows Update or the Installation Assistant. If it does not, weigh up careful continued use, paid extended updates or a replacement computer.
Whichever path you choose, protect your files first and avoid unofficial shortcuts. For more help with computer decisions, visit our common problems page.
Want a Hand With the Upgrade?
A local technician can check eligibility, back up your files and complete the move for you. You will get honest advice if a new computer makes more sense.