What Resetting a Laptop Does and When to Do It
A factory reset wipes your laptop and reinstalls the original operating system, removing all your files, programs, and settings. It is not the same as restarting — restarting just turns the machine off and back on. A reset erases everything and returns the laptop to the state it left the factory.
Reset your laptop when it runs slowly despite removing programs, when malware or viruses survive other removal attempts, when you plan to sell or give it away, or when the operating system has become unstable after failed updates. Do not reset if you have files you need — back them up first to an external drive or cloud storage.
The steps differ between Windows and macOS, and the time required ranges from 30 minutes to two hours depending on your internet speed and laptop age. Plan to have the laptop plugged in and connected to Wi-Fi for the entire process.
Key Takeaways
- Back up all your files to an external drive or cloud storage before starting, because a factory reset erases everything on the laptop.
- Windows laptops reset through Settings > System > Recovery, while Mac laptops use System Settings > General > Transfer or Reset.
- The reset process requires a stable internet connection and can take 30 minutes to two hours depending on your laptop's age and speed.
- After the reset completes, you will need to sign in with your Microsoft account (Windows) or Apple ID (Mac) and reinstall any programs you want to keep.
How to Reset a Windows Laptop
Open Settings by pressing the Windows key and typing "Settings," then select the Settings app. Click 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 to remove files locally or remove files and clean the drive — cleaning the drive takes longer but is more find if you plan to sell the laptop.
Windows will restart several times during the reset. Do not turn off the laptop or unplug it. Once the reset finishes, you will see the Windows setup screen. Sign in with your Microsoft account, choose your privacy settings, and wait while Windows installs updates. This final step can take 20 to 40 minutes.
How to Reset a Mac Laptop
Click the Apple menu in the top left corner and select System Settings. Click General in the sidebar, then scroll down and click Transfer or Reset. Click Erase All Content and Settings.
macOS will ask you to sign in with your Apple ID — this is required and prevents someone else from using the laptop after the reset. Enter your password and two-factor code if prompted. The system will warn you that this action cannot be undone; click Erase to confirm.
Your Mac will restart and show a progress bar. The entire process typically takes 30 to 60 minutes. When it finishes, you will see the macOS setup screen. Sign in with your Apple ID, choose your language and region, and wait while the system completes its setup. Do not close the laptop or disconnect power during this time.
Backing Up Your Files Before You Reset
Connect an external hard drive or USB flash drive to your laptop. On Windows, open File Explorer, select the folders you want to keep (Documents, Pictures, Desktop, Downloads), right-click, and choose Send to, then select your external drive. On Mac, open Finder, click your external drive in the sidebar, then drag your folders into it.
Alternatively, use cloud storage: upload your files to Google Drive, OneDrive, Dropbox, or iCloud before resetting. This method is slower for large files but means your files are safe even if the external drive fails. Most cloud services offer 15 to 100 gigabytes free; check how much space you need before starting.
The backup process can take several hours if you have many large files. Plan to back up overnight or while you are away from the laptop. Once the backup finishes, verify that your important files are actually on the external drive or in the cloud by opening the backup location and checking a few folders.
What Happens After the Reset Is Complete
Your laptop will restart and show the initial setup screen, just as if it were brand new. You will need to sign in with your Microsoft account (Windows) or Apple ID (Mac), choose your language and region, and set your privacy preferences. This setup takes 10 to 20 minutes.
After setup finishes, your laptop will be empty except for the operating system and a few built-in programs. Any software you installed before the reset — web browsers beyond the default, Microsoft Office, Adobe Creative Suite, antivirus programs — is gone and must be reinstalled. read and install only the programs you actually use.
Windows will spend 20 to 40 minutes installing updates after the reset. Let this happen without interrupting it. Your laptop may restart several times. Once updates finish, your reset is truly complete and the laptop should run noticeably faster than before.
Troubleshooting a Reset That Fails or Gets Stuck
If the reset stops responding or shows an error message, force restart the laptop: on Windows, hold the power button for 10 seconds until the screen goes black, then wait 30 seconds and press the power button again. On Mac, hold the power button for 10 seconds, release it, wait a few seconds, then press it again.
If the reset fails repeatedly, the hard drive may be failing. Try the reset one more time, but if it fails again, the laptop likely needs hardware repair. Contact the manufacturer's support line or visit a local repair shop — attempting further resets will not fix a failing drive.
If you see a message that the reset cannot complete because of insufficient disk space, the laptop's drive is nearly full. Restart the laptop normally, delete large files or programs you do not need, empty the Recycle Bin (Windows) or Trash (Mac), then try the reset again.
Frequently Asked Questions
Can I reset my laptop without losing my files?
Windows offers a "Keep my files" option during reset, which removes programs and settings but preserves your Documents, Pictures, and Desktop folders. This is faster than a full reset but does not clean out malware as thoroughly. Back up your files first regardless of which option you choose.
How long does a factory reset actually take?
The reset itself takes 30 to 60 minutes, but the setup and updates afterward can add another 30 to 60 minutes. Older laptops and slower internet connections take longer. Plan for two to three hours total and keep the laptop plugged in the entire time.
Do I need my password to reset my laptop?
On Windows, you need to sign in with your Microsoft account. On Mac, you must sign in with your Apple ID. If you have forgotten either password, you can reset it through the account recovery page before starting the laptop reset.
Will a factory reset remove viruses?
Yes, a factory reset removes viruses and malware because it erases the entire drive and reinstalls the operating system. However, if the virus infected your backup files, you will reinfect the laptop when you restore them. Scan your backup drive with antivirus software before copying files back.
What if I change my mind after the reset starts?
Once the reset begins, stopping it mid-process can leave your laptop in an unusable state. Let it finish. If you realize you needed a file, check your backup drive or cloud storage after the reset completes.