What a complete PC reset does and when you need one

A complete PC reset removes all your files, programs, and settings and returns your computer to the state it was in when it left the factory. Windows calls this "Reset this PC" on Windows 10 and 11. It is different from a restart (which just reboots the system) or a refresh (which keeps some files but removes programs).

You need a complete reset when you are selling or giving away the computer, when malware has infected the system so deeply that antivirus tools cannot clean it, or when your PC has become so slow or unstable that reinstalling Windows is the only fix left. A reset also works if you inherited a used computer and want to start fresh without the previous owner's data or accounts.

The reset process takes 30 minutes to 2 hours depending on your drive speed and whether you choose to keep or remove everything. During the reset, Windows will restart several times. You will need your Microsoft account password or a local password to sign back in when it finishes.

Key Takeaways

  • A complete reset erases all files, programs, and settings and returns Windows to factory condition, which is different from restarting or refreshing your PC.
  • Back up any files you want to keep before starting the reset, because the process cannot be undone once it begins.
  • On Windows 10 and 11, you reach the reset tool through Settings > System > Recovery, and you can choose to keep or remove your files during the process.
  • The reset will remove all user accounts except the one you are signed into, so save any data from other accounts first.
  • After the reset completes, you will need to sign in with your Microsoft account or create a local account, then reinstall your programs and restore your backed-up files.

Back up your files before you start

Once you begin a reset, you cannot stop it partway through or recover files afterward. Before you touch the reset button, copy everything you want to keep to an external drive, cloud storage, or another computer.

The easiest method is to plug in an external USB drive and drag your Documents, Pictures, Downloads, and Desktop folders to it. If you have a lot of files, use File Explorer to select them all at once: press Ctrl+A to select everything in a folder, then right-click and choose "Send to" and pick your external drive. For cloud backup, you can upload files to OneDrive (which comes with Windows), Google Drive, or Dropbox.

Check your browser for saved passwords and bookmarks. In Microsoft Edge or Chrome, open Settings and look for the option to export or sync your data. If you use email programs like Outlook or Thunderbird, export your messages and contacts before the reset. Also note down any software license keys you will need to reinstall programs later — many programs ask for these during installation.

How to reset Windows 10

Open Settings by pressing the Windows key and typing "settings," then click the Settings app. Go to System (the first option on the left), then scroll down and click Recovery. You will see a blue button that says "Reset this PC" — click it.

Windows will ask whether you want to "Keep my files" or "Remove everything." Choose "Keep my files" if you want to erase programs and settings but preserve your Documents, Pictures, Downloads, and Desktop folders. Choose "Remove everything" if you are selling the computer or want a completely clean slate. If you choose "Remove everything," Windows will ask whether to reinstall from the cloud or from local files — either works, but cloud reinstall is slower.

Next, Windows lists what will be removed: apps, settings, and (if you chose "Remove everything") your personal files. Review this list, then click Reset. Your computer will restart and begin the reset process. You will see a progress screen that says "Resetting your PC" — this is normal and can take 30 minutes to over an hour. Do not turn off the computer during this time.

How to reset Windows 11

The process is nearly identical to Windows 10. Press the Windows key, type "settings," and open the Settings app. Click System on the left, scroll down to Recovery, and click "Reset PC." Windows 11 uses the same two options: "Keep my files" or "Remove everything."

If you choose "Keep my files," Windows will preserve your Documents, Pictures, Downloads, Desktop, and OneDrive folders but remove all installed programs and user accounts except the one you are currently signed into. If you choose "Remove everything," all personal files are also deleted. After you choose, Windows shows a summary of what will happen, then asks you to confirm by clicking Reset.

Windows 11 will restart and show a progress screen. The reset typically takes 45 minutes to 2 hours. Your screen may go black or show "Preparing" for several minutes — this is normal. Let the process finish without interruption. When it completes, you will see the Windows 11 setup screen asking you to choose a language and region.

What happens after the reset finishes

When the reset is complete, Windows will ask you to set up your PC as if it were brand new. You will choose your language, region, and keyboard layout. Then Windows asks whether you want to sign in with a Microsoft account or create a local account. A Microsoft account syncs your settings across devices and lets you use OneDrive and the Microsoft Store; a local account is simpler but does not sync.

After you sign in, Windows will install updates and drivers, which can take 10 to 30 minutes. Your screen may restart several times during this phase. Once updates finish, you will have a clean desktop with only the built-in Windows apps (like File Explorer, Notepad, and Settings).

Now you need to reinstall your programs. Go to the Microsoft Store or read installers from the websites of the programs you use (Chrome, Firefox, Office, Zoom, Slack, and so on). As you install each program, you may need to enter license keys or sign in with your account. Finally, restore your backed-up files by copying them from your external drive or cloud storage back to your Documents, Pictures, or Desktop folders.

Troubleshooting a reset that will not start

If the Reset button is grayed out or does not respond, your PC may not have enough free space. Windows needs at least 10 GB of free storage to reset. Check how much space you have by opening File Explorer, right-clicking your C: drive, and choosing Properties. If you are low on space, delete large files or programs you do not need, or move files to an external drive.

If you see an error message during the reset, write down the error code and search for it on the Microsoft Support website. Common errors include "Something went wrong" (usually a driver conflict) or "We couldn't reset your PC" (usually a corrupted system file). If the reset fails partway through, restart your computer and try again. If it fails a second time, you may need to use Windows installation media to perform a clean install instead.

If you cannot sign into Windows to reach the Settings app, you can reset from the login screen. On Windows 10, click "I forgot my password" and follow the steps to reset your account. On Windows 11, click "Reset this PC" from the login screen if that option appears, or use a Windows installation USB drive to reset from there.

When to use a clean install instead of a reset

A reset is the easiest way to wipe your PC for most people, but a clean install using Windows installation media gives you more control. A clean install means downloading Windows from Microsoft, creating a bootable USB drive, and installing Windows from scratch. This is useful if your reset keeps failing, if you want to change from Windows 10 to Windows 11, or if you want to install Windows on a new drive.

To create installation media, go to microsoft.com/software-read/windows11 (or windows10 for Windows 10), read the Media Creation Tool, and follow the steps to create a bootable USB drive. You will need a USB drive with at least 8 GB of space. Then restart your computer, press F12 or Delete during startup to enter the boot menu, select your USB drive, and follow the Windows installer. A clean install takes about 20 to 40 minutes and gives you the same result as a reset, but with more options along the way.

Frequently Asked Questions

Will a reset remove viruses and malware?

Yes, a complete reset removes all malware because it deletes everything on your drive and reinstalls Windows from scratch. However, if malware is on an external drive or USB device you plug in after the reset, it can reinfect your PC. After resetting, scan any external drives with antivirus software before copying files back to your computer.

Can I undo a reset after it starts?

No. Once the reset begins, you cannot stop it or recover files. This is why backing up before you start is critical. If you realize mid-reset that you forgot to back up important files, let the reset finish, then contact a data recovery service — they may be able to recover files from your old drive, but this is expensive and not always successful.

Do I need a Windows product key to reset my PC?

No. If Windows was already activated on your PC before the reset, it will reactivate automatically after the reset using your hardware ID. You do not need to enter a product key. If you are moving Windows to a different computer, you may need a key, depending on your Windows version and license type.

What if I only want to remove one program or account, not reset the whole PC?

Use Settings > Apps > Apps and Features to uninstall individual programs, or Settings > Accounts to delete a user account. A full reset is only necessary if you want to remove everything or if your system is too damaged to repair another way.

How long does a reset actually take?

The reset process itself takes 30 minutes to 2 hours depending on your drive speed and whether you chose "Keep my files" or "Remove everything." After the reset finishes, Windows updates and driver installation can add another 30 minutes to an hour. Plan for 2 to 3 hours total from start to finish, including the time to reinstall your programs afterward.