What Resetting Your Desktop Actually Does

A factory reset erases everything on your computer's hard drive and reinstalls the original operating system—Windows, macOS, or Linux—as if the machine just came from the manufacturer. All your files, programs, settings, and accounts are removed. After the reset completes, you'll see the setup screen you saw the first time you turned on the computer, and you'll need to create a new user account or sign in with a Microsoft or Apple account.

This is different from a restart or shutdown. A restart closes all programs and reboots the operating system while keeping everything on your drive intact. A factory reset is permanent and irreversible, so back up any files you want to keep before you start.

Key Takeaways

  • Back up all files you want to keep to an external drive or cloud storage before starting, because a factory reset deletes everything on your computer.
  • On Windows 10 or 11, open Settings, go to System, select Recovery, and click Reset This PC to start the process from your desktop.
  • On a Mac, restart while holding Command + R to enter Recovery Mode, then use Erase Mac and Reinstall macOS from the Utilities menu.
  • The reset process takes 30 minutes to two hours depending on your drive size and internet speed, and your computer will restart multiple times.
  • After the reset finishes, you'll need to create a new user account and reinstall any programs you want to use.

Back Up Your Files Before You Start

Before you reset anything, move every file you want to keep off your computer. Plug in an external hard drive or USB flash drive, or use a cloud storage service like Google Drive, OneDrive, or Dropbox. Copy your Documents, Pictures, Downloads, and Desktop folders to the backup location. If you have email, check whether your email program stores messages locally on your computer (Outlook does; Gmail in a browser does not) and back those up too.

If you're not sure what to back up, look in your user folder—usually C:\Users\[Your Name] on Windows or /Users/[Your Name] on Mac. Anything in there that you created is fair game. System files and program files will reinstall automatically.

Reset a Windows 10 or Windows 11 Desktop

Open the Start menu and type "Reset this PC" into the search box. Click the result that says "Reset this PC" under Settings. A window will open with a blue "Reset PC" button—click it.

You'll see two options: "Keep my files" and "Remove everything." Choose "Remove everything" if you want a true factory reset. If you choose "Keep my files," Windows will erase all programs and settings but leave your Documents, Pictures, and Desktop folders in place—this is faster but not a complete reset.

Next, you'll choose whether to reinstall Windows from the cloud or use local reinstall files. "Cloud read" is usually faster if your internet is stable. Select it, then click Next. Windows will ask you to confirm—click Reset. Your computer will restart and begin the reset process, which takes 30 minutes to an hour. Do not turn off the computer during this time.

When the reset finishes, you'll see the Windows setup screen. Create a new user account, sign in with a Microsoft account, or skip to a local account. Then you're done—your desktop is back to factory condition.

Reset a Mac Desktop

Shut down your Mac completely. Turn it back on and when ready hold down Command + R. Keep holding until you see the Apple logo or a spinning globe. This boots your Mac into Recovery Mode, where you can erase the drive and reinstall macOS.

Once you're in Recovery Mode, you'll see a menu with several options. Click Disk Utility, then select your main hard drive (usually called "Macintosh HD" or similar) from the list on the left. Click the Erase button at the top, choose a format (APFS for newer Macs, Mac OS Extended for older ones), and confirm. This erases the drive completely.

Close Disk Utility and return to the Recovery Mode menu. Click "Reinstall macOS" and follow the prompts. Your Mac will read and install the original operating system, which takes 45 minutes to two hours depending on your internet speed. Your Mac will restart several times during this process. When it finishes, you'll see the macOS setup screen where you can create a new user account.

What to Do After the Reset Is Complete

Once your computer boots into the setup screen, create a new user account with a strong password. On Windows, you can use a local account (username and password only) or a Microsoft account (which syncs settings across devices). On Mac, you'll use an Apple ID or create a local account.

After setup finishes, your desktop is blank except for the default programs that came with your operating system. Restore your backed-up files by copying them from your external drive or cloud storage back to your Documents, Pictures, or Desktop folders. Then reinstall any programs you use regularly—read them from the publisher's website or the Microsoft Store (Windows) or App Store (Mac).

Common Mistakes to Avoid

The biggest mistake is forgetting to back up first. Once the reset starts, your files are gone. There's no undo button. If you realize mid-reset that you forgot something, stop when ready by shutting down the computer—you may be able to recover some files with data recovery software, though success is not may provide.

Another common error is interrupting the reset by turning off the computer, unplugging it, or closing the laptop. This can corrupt the operating system and leave your computer unbootable. Let the reset run to completion, even if it takes longer than you expect.

On Windows, don't choose "Keep my files" if you're trying to fix a malware or virus problem. Malware often hides in program files, and keeping your files means the infection might return. Use "Remove everything" to get a truly clean slate.

When You Might Need a Factory Reset

A factory reset is useful when your computer is running slowly and you've already tried restarting, uninstalling unused programs, and running a disk cleanup. It's also the right move if you're selling or giving away the computer and want to erase all your personal data. If your computer has a virus or malware that antivirus software can't remove, a factory reset will erase it—though you should scan any backup files before restoring them.

A factory reset is not the first step for most problems. If your computer won't start, won't connect to the internet, or has a single broken program, try restarting first, checking for updates, or uninstalling and reinstalling that one program. A reset should be your last resort when nothing else works.

Frequently Asked Questions

Can I stop a reset once it starts?

Yes, but only in the early stages. If you see the setup screen asking which option you want, you can close it and cancel. Once the actual erasing and reinstalling begins, stopping it can corrupt your operating system and make your computer unbootable. Let it finish.

Will a factory reset remove viruses?

Yes. A factory reset erases everything on your drive, including malware and viruses. However, if you restore files from a backup that was infected, you may reintroduce the problem. Scan backup files with antivirus software before restoring them, or restore only the files you created (documents, photos, videos) and not program files.

Do I need the original Windows or macOS disc?

No. Modern computers read the operating system from the internet during the reset. On Windows 11, you can reset from Settings without any disc. On Mac, Recovery Mode downloads macOS automatically. You only need a disc if your internet is too slow or unavailable, in which case you can create installation media on another computer.

How long does a factory reset take?

Between 30 minutes and two hours, depending on your drive size, internet speed, and how many times your computer restarts. Don't interrupt it or close the laptop. Plug in your power adapter so the battery doesn't die partway through.

What if I forgot my password and can't sign in?

A factory reset is one way to regain access, since you'll create a new account during setup. On Windows, you can also use another admin account to reset a forgotten password, or use a Microsoft account password reset if you remember your email. On Mac, you can use your Apple ID to reset a forgotten password without erasing the drive.