How to Backup Windows 10 Computer

This guide walks you through creating a complete backup of your Windows 10 PC, including your personal files and a system image. You’ll learn how to use the built-in File History and Backup and Restore tools, plus how to create a recovery drive. No extra software is needed—everything is included with Windows.

What You’ll Need

• A Windows 10 PC that’s fully updated (Settings > Update & Security > Windows Update).
• An external hard drive or USB flash drive with enough free space. For File History, use a drive at least as large as the data you want to back up. For a system image, you’ll need space equal to the used space on your system drive (usually C:).
• If you’re backing up to a network location, make sure you have the network path and credentials ready.
• About 30–60 minutes of uninterrupted time, depending on how much data you have.

Step-by-Step

Back Up Your Personal Files with File History

1. Connect your external drive to your PC. If prompted, choose “Configure this drive for backup” in the notification that appears. If not, continue to step 2.
2. Open the Start menu, type “File History”, and select the “File History” control panel app.
3. If your external drive is connected, it should appear as the default. If not, click “Select drive” and choose it from the list.
4. Click “Turn on” to start backing up your Libraries, Desktop, Contacts, and Favorites. By default, it backs up these folders every hour.
5. To include additional folders, click “Exclude folders” and then “Add” to remove any you don’t want. To add custom folders, you’ll need to include them in a Library. Right-click the folder > “Include in library” > choose a library.
6. To change the backup frequency or retention, click “Advanced settings”. You can set the save frequency from every 10 minutes to daily, and choose how long to keep saved versions.
7. Once enabled, File History runs automatically in the background. You can see the last backup time on the main screen.

Create a System Image Backup (Full PC Backup)

1. Connect your external drive with enough free space (equal to the used space on C:).
2. Open the Control Panel (type “Control Panel” in the Start menu).
3. Click “System and Security” > “Backup and Restore (Windows 7)”.
4. On the left side, click “Create a system image”.
5. Choose where to save the backup: “On a hard disk” (select your external drive), “On one or more DVDs”, or “On a network location”.
6. Click “Next”. Windows will show you the drives that will be included (usually the system drive and the system reserved partition).
7. Click “Start backup”. This can take an hour or more. Do not disconnect the drive or turn off the PC during this time.
8. When it’s done, Windows will ask if you want to create a system repair disc. You can skip this if you already have a recovery drive (see below).

Create a Recovery Drive (for Booting and Restoring)

1. Type “Create a recovery drive” in the Start menu and open the app.
2. If you want to be able to reinstall Windows, check “Back up system files to the recovery drive”. This requires a USB drive of at least 16 GB.
3. Click “Next”, then select your USB drive from the list. Warning: all data on the USB drive will be erased.
4. Click “Create” and wait for it to finish. This can take 20–30 minutes.
5. Once done, label the drive and store it in a safe place.

Restore Your Files (When Needed)

1. To restore individual files from File History, open File Explorer, go to the folder that had the file, and click the “History” button on the ribbon. Select the version you want and click the green restore button.
2. To restore from a system image, boot from your recovery drive (or installation media). Choose “Repair your computer” > “Troubleshoot” > “Advanced options” > “System Image Recovery”. Follow the prompts to select your backup and restore.

Common Mistakes

• Keeping the backup on the same drive as your data. If your hard drive fails, you lose both. Always use a separate physical drive.
• Not checking that File History is actually running. It can stop if the drive disconnects. Check the status periodically.
• Ignoring the “system image” because you think File History is enough. File History only backs up selected folders, not the whole system. For a complete disaster recovery, you need a system image.
• Using a drive that’s too small. If the drive fills up, backups will fail. Use a drive with at least 1.5 times the space of your data.
• Disconnecting the drive during a backup. This can corrupt the backup. Always use “Safely Remove Hardware” before unplugging.

Tips

• Schedule regular backups. File History runs automatically, but system images don’t. Set a reminder to create a system image monthly, or after major changes.
• Use the “Advanced settings” in File History to keep versions for longer (e.g., “Until space is needed”) so you can recover older versions of files.
• Test your backups. Try restoring a single file from File History to make sure it works. For system images, you can mount the VHD file (right-click the .vhd > Mount) to verify it contains what you expect.
• Consider using a cloud service for off-site backup of critical files, but don’t rely on it alone—local backups are faster and don’t depend on internet.
• If you’re short on space, exclude temporary folders and browser caches from File History.

Troubleshooting

• File History says “No valid drives are found.” Make sure your drive is connected and formatted with NTFS or FAT32. Try a different USB port. If it’s a network drive, ensure it’s mapped and accessible.
• Backup fails with “Not enough space.” Free up space on the target drive, or reduce the folders included in File History. For system images, you may need to delete older backups.
• System image creation fails. Run “chkdsk /f” on your system drive (requires restart) to fix disk errors. Also, temporarily disable any third-party antivirus or disk encryption software during the backup.
• Restore doesn’t see the backup. Ensure the drive is connected and the backup is on the root of the drive, not inside a folder. For network backups, check the path and credentials.
• The recovery drive won’t boot. Restart your PC and press the boot menu key (often F12, Esc, or Del) to select the USB drive. Make sure Secure Boot is disabled if the drive was created on a different PC.

Frequently Asked Questions

What’s the difference between File History and a system image?

File History continuously backs up your personal files (Documents, Pictures, etc.) so you can recover previous versions. A system image is a snapshot of your entire C: drive, including Windows and installed programs, used to restore your PC to that exact state.

Can I back up to a network drive or NAS?

Yes, File History supports network locations. In File History, click “Select drive” > “Add network location” and enter the path. System images also support network locations, but the drive must be accessible and you may need to enter credentials.

How often should I back up?

For personal files, File History every hour is fine. For system images, create one monthly, and always before installing major updates or making significant changes to your system.

Will a system image restore my programs and settings?

Yes, a system image restores the entire drive, including installed programs, settings, and personal files, exactly as they were at the time of the backup.

Can I use a USB flash drive for File History?

Yes, but it’s not recommended because flash drives have limited write endurance and may wear out quickly. Use an external hard drive or SSD for reliability.

Do I need to keep the backup drive connected all the time?

File History works best when the drive is always connected. If you disconnect it, backups will pause and resume when you reconnect. For system images, you only need to connect the drive when creating or restoring a backup.

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