What resetting to manufacturer settings means and when to do it
Resetting your computer to manufacturer settings wipes your hard drive and reinstalls the operating system that came with the machine. This removes all your files, programs, and personal settings — the computer returns to the state it was in when you first opened the box. The process is sometimes called a factory reset, clean install, or format and reinstall.
You would do this when your computer has become too slow to use, when malware has infected it badly enough that antivirus software cannot clean it, when you are selling or giving away the machine, or when you want to start fresh after years of accumulated clutter. It is also the fix of last resort when Windows or macOS stops starting up properly.
The reset process takes between 30 minutes and two hours depending on your internet speed and how much data the computer has to move. You will lose everything on the drive unless you back it up first — there is no undo button once the process starts.
Key Takeaways
- Back up all your files to an external drive or cloud storage before you start, because the reset will erase everything on your computer.
- Windows 10 and 11 have a built-in reset tool under Settings > System > Recovery that does not require installation media.
- Mac computers use the Erase and Reinstall option in System Settings > General > Transfer or Reset, which also works without external media on newer machines.
- You will need your Microsoft or Apple account password to sign back in after the reset completes.
- The reset process can take one to two hours and your computer will restart multiple times — do not unplug it or force it to shut down during this time.
How to reset a Windows 10 or Windows 11 computer
Open Settings by pressing the Windows key and typing "Settings", then click the Settings app. Go to System in the left sidebar, then scroll down and click Recovery. Under Reset this PC, click the Reset PC button.
Windows will ask whether you want to keep your files or remove everything. Choose Remove everything if you want a true factory reset. The system will then ask whether you want to reinstall Windows from the cloud or use local reinstall. Cloud reinstall is faster if your internet connection is stable; local reinstall works better if your connection drops frequently. Choose whichever matches your situation.
Windows will show you a summary of what it is about to do. Click Reset to confirm. Your computer will restart and begin the process. You will see a progress bar and the machine will restart several times. Do not turn off the computer or unplug it during this time. When the process finishes, you will see the Windows setup screen where you sign in with your Microsoft account.
How to reset a Mac computer
On a Mac running macOS 11 Big Sur or newer, click the Apple menu in the top left corner and select System Settings (or System Preferences on older versions). Click General in the left sidebar, then look for Transfer or Reset at the bottom of the window. Click Erase All Content and Settings.
macOS will warn you that this action cannot be undone and will ask for your Apple ID password. Enter it and click Continue. The system will restart and begin erasing your drive. You will see a progress indicator. When the process finishes, you will see the macOS setup screen.
If you have an older Mac running macOS 10.15 Catalina or earlier, you will need to use macOS Recovery instead. Restart your Mac and hold Command + R while it starts up. When Recovery mode loads, click Utilities in the menu bar, then Disk Utility. Select your main drive (usually called Macintosh HD), click Erase, and confirm. Then go back to Utilities and select Reinstall macOS.
Backing up your files before you reset
Before you start the reset, move everything you want to keep to an external hard drive, USB flash drive, or cloud storage service. This includes documents, photos, videos, and any files in your Downloads folder or Desktop.
The fastest way is to plug in an external drive and drag your entire Documents, Pictures, and Downloads folders onto it. If you do not have an external drive, you can upload files to Google Drive, OneDrive, Dropbox, or iCloud instead — this takes longer but works if your internet is stable. Make sure the upload finishes completely before you start the reset.
Check that your backup actually contains your files by opening it on another computer or device. A backup that does not work is the same as no backup.
What to do after the reset is complete
When your computer finishes resetting, it will ask you to sign in. Use your Microsoft account (Windows) or Apple ID (Mac) — the same one you used before. The system will read your settings, wallpaper, and some of your apps automatically.
You will need to reinstall any programs you use regularly. Go to the Microsoft Store (Windows) or App Store (Mac) and search for each program by name, then click Install. If you used programs that are not in the store — like Photoshop, Zoom, or Chrome — read them from the publisher's website instead.
Restore your files by copying them back from your external drive or downloading them from cloud storage. This is the slowest part of the process, especially if you have large video files or thousands of photos.
Troubleshooting if the reset gets stuck or fails
If the reset stops responding or shows an error message, restart your computer by holding the power button for 10 seconds until it shuts down completely. Wait 30 seconds, then turn it back on and try the reset again from the beginning.
If you see an error about not enough disk space, the computer may have a corrupted file taking up room. Restart in Safe Mode (Windows: hold Shift while clicking Restart; Mac: restart and hold Shift), then try the reset again. Safe Mode loads only essential programs and sometimes allows the reset to work.
If the reset fails multiple times, your hard drive may be failing. In that case, you will need to replace the drive or take the computer to a repair shop. A failing drive cannot be fixed by software.
Frequently Asked Questions
Will I lose my Microsoft or Apple account if I reset my computer?
No. Your account exists on Microsoft or Apple's servers, not on your computer. After the reset, you sign back in with the same username and password, and your account settings sync back to the computer. You will not lose your email, contacts, or cloud files.
Can I reset my computer if it will not start up?
Yes, but the process is different. Restart your computer and hold F12 (or F2, Delete, or Escape depending on the brand) while it starts to enter the boot menu. Look for an option to boot from USB or recovery media. If you do not have recovery media, you will need to create it on another computer using Microsoft's Media Creation Tool (Windows) or Apple's macOS installer.
How long does a factory reset actually take?
The reset itself takes 30 to 60 minutes. Reinstalling your programs and restoring your files from backup takes another 1 to 3 hours depending on how much you have and your internet speed. Plan for the whole process to take most of a day.
Do I need to uninstall my antivirus before I reset?
No. The reset erases everything on the drive, including antivirus software, so there is nothing to uninstall. After the reset, you can install antivirus software fresh on the clean system.
What if I change my mind after the reset starts?
You cannot stop the reset once it begins without losing data. If you force the computer to shut down partway through, the drive will be partially erased and the computer may not start. Let the reset finish, even if it takes longer than you expected.