How to Recover Files after Reinstalling Windows 10/8/7

Reinstalled Windows 10 and lost everything, you are not alone. Here, follow the three effective ways to recover files after Windows reinstall, clean install, reset, or automatic update. EaseUS data recovery is the easiest among all to recover missing or deleted files after installing new Windows.

Table of Contents

Restore lost files after reisntalling Windows from File History backup

Quick Fix for I Installed Windows 10 and Lost Everything:

  1. Step 1: Open Settings and select Update & Security.
  2. Step 2: Look for the Backup option and recover either with Backup from File History or Looking for an Older Backup option.
  3. Step 3: Select the required files and restore them.
  4. More details...

Reinstalled Windows 10 and Lost Everything

"Please help me! I have reinstalled windows and lost everything on my computer! I have lost windows.old too when trying to fix it."

There are many reasons for reinstalling a new Windows OS from scratch. For example, after reinstalling Windows 10, you can enjoy benefits like removing viruses/malware, regaining control over your programs, and fixing system-related issues on your computer. Besides, reinstalling Windows also provides you with a fresh start to speed up your computer. Apart from the known advantages, you will also need to reinstall Windows in some specific situations.

Reasons for Reinstalling Windows OS:

  • Windows system files are deleted or corrupted
  • Windows registry has been corrupted
  • Hardware failure causes a Windows system crash
  • Fail to remove the virus/spyware
  • A sudden blue or black screen of death (BSOD)
  • Windows system upgrades or updates
  • Other unknown reasons which cause Windows system unbootable

Windows Reset vs. Reinstall vs. Clean Install: Will it Keep My Files?

There are three types of reinstalls for Windows 10. In general, Microsoft recommends that you first try to "Reset Windows 10", then if needed, "Reinstall Windows 10 using installation media", and then if needed try a "Clean install of Windows 10 using installation media". Different options of the reinstall will have different impacts on your apps, files, personal data, and how likely it is to recover data after reinstalling Windows. 

Reinstall Type Reinstall options you can choose What happens to data, files and folders
Reset Windows 10 Keep my files Preserved
Reset Windows 10 Remove everything Deleted
Reinstall Windows 10 using installation media Keep Everything (Default) Preserved
Reinstall Windows 10 using installation media Keep Personal Data Preserved
Reinstall Windows 10 using installation media Keep Nothing Deleted
Clean install Windows 10 using installation media

N/A (This option deletes and recreates all disk partitions)


If you have personal data and files that you want to save, back them up to an external hard drive, USB thumb drive, SD card, or cloud location (such as OneDrive) before you begin to reinstall Windows 10. Otherwise, make sure that you choose the right reinstall options to preserve data or remove all during the reinstallation.

How to Recover Files After Reinstalling Windows 10/8/7

Windows data and files may not be deleted permanently after reinstalling Windows 10/8/7. The lost files can still be recovered using reliable methods. In this part, you will uncover three proven & practical ways to recover files after reinstalling Windows 10/8/7 using Windows data recovery software, Windows File History Backup, and performing System Restore.

Method 1. Recover Files After Windows Reinstall with EaseUS Data Recovery

The first recommended method is to apply a hard drive recovery software - EaseUS Data Recovery Wizard. If you are not a veteran, this tool is your best choice. It helps you recover lost data in a few clicks. Here are the amazing features of EaseUS Data Recovery Wizard.

  • Recover everything you want. It supports deleted data recovery, formatted file recovery, lost partition recovery, OS crash recovery, RAW partition recovery, and more.
  • Flexible Scanning Modes. It offers both the Quick Scan and Advanced Scan to help you find the needed data.
  • Preview Before Recovery. To make sure the file contents are alright, EaseUS Data Recovery Wizard enables you to preview lost files before the actual recovery.

Download and apply this software immediately to recover files after reinstalling Windows as many as possible.

Step 1. Select a particular drive or device at which you want to scan for the deleted/lost files. Next, hit the "Scan" button to start the scanning process.

select the place

Step 2. Wait for the scan to finish. Then, choose the data you want to restore, double-click to preview the content. You can also click the Filter to dispaly only the file type you want.

scan the location to find data

Step 3. Now, click the "Recover" button to recover files to a customized path. Be careful not to save the data to the source disk to avoid data overwriting.

recover data

Method 2. Recover Files with Windows Backup File History

If you have no backup available, using a data recovery tool is recommended. However, if you have backed up your lost files via Windows File History, you can recover the lost files from the backup location. Here are the detailed steps:

Step 1. Open "Settings" and select "Update & Security".

Step 2. Find the "Backup" option to locate your backup.

Recover files after clean install Windows 10 using File History

Step 3. Under "Back up using File History", choose "More options".

Step 4. Scroll down to the "Related settings" section, choose "Restore files from a current backup".

Step 5. Look for the file you need, then use the arrows to see all its versions.

Restore lost files after reisntalling Windows from File History backup

Step 6. When you find the version you want, select "Restore" to save it in its original location.

To save it in a different place, right-click "Restore" > "Restore to", and then choose a new location.

Method 3. Perform System Restore to Restore Lost Files 

Please note that if you create a system restore point on your computer, you can use it to recover files lost due to Windows reinstallation. However, this will revert your OS to the previous status.

If this is not the result you expected, try the former two methods. If you don't mind reinstalling Windows 10/8/7 on your computer again, you may follow the steps below and give it a try:

Step 1. Press the "Windows + R" keys in Windows 10/8/7 to bring up the Run box. 

Step 2. Type rstrui.exe in the empty box and hit Enter. This will open System Restore.

Step 3. Select "Choose a different restore point" and click "Next".

Step 4. Click "Scan for affected programs".

Check affected programs and files while running system restore.

Step 5. If none of your data drives is affected, click "Next" to finish the process. 

If your data drive is affected, back up your saved data to an external hard drive in advance. Then follow the onscreen instruction to finish the procedure. 

How to Reinstall or Clean Install Windows OS Without Data Loss

To ensure you can reinstall Windows 10, Windows 8, or earlier versions without data loss, here are some useful tips for you.

# 1. Back up Files in Advance

Windows reinstallation will inevitably cause data loss on your computer hard drive as demonstrated on this page. Therefore, it's important to back up your important files in advance.

  • When you attempt to reinstall Windows on a working PC, you can use the disk cloning software to make a copy of your disk or partition, which is much faster than manually copying and pasting.
  • If you try to reinstall Windows on a non-bootable PC, don't worry. You can use the Windows backup software to create bootable media and back up your files before the installation.

# 2. Migrate Windows Without Reinstalling OS

When you clean install Windows 10/8/7 on another, you will lose all your apps, settings, and files after the reinstallation. If you want to keep them, a better choice for you is to migrate OS.

The Bottom Line

This page answers the questions of how to recover lost files after reinstalling Windows 10/8/7 by using Windows data recovery software, File History, and System Restore. If you don't have a backup or system restore point, EaseUS Data Recovery Wizard is your last choice for bringing the lost files back. 

Moreover, keep two things in mind to avoid complete data loss during Windows reinstall: make sure you have backed up the files you need before the installation and perform data recovery as soon as possible once there is unexpected data loss.

FAQs About Recover Files After Reinstalling Windows 10

By reading through the article, you should be able to recover files after reinstalling Windows 10/8/7 by yourself. Meanwhile, we summarized the answers to the most concerning questions that you might also be interested in.

1. How do I reinstall old Windows and keep files?

There are two things that you should do to keep files on your computer while reinstalling Windows 10:

  • First, create the backup of your files in advance.

You may manually copy or use advanced Windows backup software to fully back up your data to an external hard drive in advance.

Next, don't tick "Remove files and clean the drive", but tick "Keep all my files" instead while installing Windows.

2. Do you lose file when reinstalling Windows?

Basically, the answer to this question is yes. Windows reinstallation is a process of replacing everything on the old system drive with the new Windows files. During the process, files saved on the desktop, Documents, Music, Image, etc. folders, and in the C: drive will all be removed. 

In a word, you will lose some files when reinstalling Windows even if you tick the "Keep all my files" option at the beginning installing process. To avoid this tragedy, back up all your valuable files to an external hard drive in advance. You may refer to Backup Computer to USB Flash Drive as a guide. 

3. Is it possible to recover data after Windows 10 reset? 

Basically, Windows 10 reset will offer users a chance to decide whether you want to keep the files on your computer or not. If you have set the computer to keep your files, most of your data saved data on the none system partition will be safely kept.

But the system C drive saved files will be removed during the process. Fortunately, you still have a chance to restore them as long as you haven't save new files on it.

The process is similar to the provided methods on this page: 1) Use EaseUS data recovery software to fully scan and restore all lost data. 2). Use File History Backup; 3) Perform System Restore.

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Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

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