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File History or system image won’t restore? Read this

November 9, 2026

You did the sensible thing and backed up your PC with Windows File History or a system image. Now the computer has died, or you have a new one, and the restore will not work. Windows says it cannot find a backup, the restore wizard fails part way, or the backup drive is not recognised. The good news is that both kinds of Windows backup store your files in a form you can often reach by hand, without the restore wizard. This guide explains how, and when to stop because the backup drive itself is the problem.

Which kind of backup do you have?

Plug the backup drive into a working Windows PC and open it in File Explorer. Look at the top-level folders:

  • A folder called FileHistory means you used File History, which keeps copies of your personal folders (Documents, Pictures, Desktop and so on).
  • A folder called WindowsImageBackup means you made a system image with Backup and Restore (Windows 7), which copies whole drives.
  • Some drives have both.

If the drive does not appear at all, makes clicking or beeping noises, or File Explorer freezes when you open it, skip to the section on a failed backup drive below.

Getting files out of File History by hand

File History does not pack your files into a special archive. It stores ordinary copies with the date and time added to each file name. Inside the FileHistory folder you will find your user name, then the computer name, then a folder called Data. Below that the layout mirrors the original drive, for example Data\C\Users\YourName\Documents.

Each saved version of a file has a time stamp in brackets, such as Accounts (2026_03_14 09_12_45 UTC).xlsx. To recover files:

  1. Browse to the folder you need.
  2. Pick the latest version of each file (the newest time stamp), or an older one if the latest was damaged.
  3. Copy the files to the new PC or another drive. Copy, do not move, so the backup stays as it was.
  4. Rename the copies to remove the time stamp if you want the original names back.

This works even when the File History restore screen insists there is nothing to restore, which often happens on a new PC with a different user or computer name.

Getting files out of a system image

A system image is stored in WindowsImageBackup\ComputerName\Backup date and time, and the drives inside it are saved as .vhdx virtual hard disk files. A full system restore needs a target disk at least as large as the original, which is why restores to a new or smaller SSD often fail. You do not need a full restore to get your files back:

  1. On a working Windows PC, open Disk Management (right-click the Start button).
  2. Choose Action, then Attach VHD.
  3. Browse to the largest .vhdx file in the backup folder, which is usually the old C: drive.
  4. Tick Read-only before clicking OK. This stops Windows writing anything to the backup.
  5. The image appears as an extra drive with its own letter. Copy the folders you need, then detach it in Disk Management.

If the old PC used BitLocker, the attached image may ask for the BitLocker recovery key, so have it ready (it is often saved in the Microsoft account the PC was signed in with).

What Windows Backup to OneDrive does not cover

Newer Windows 11 PCs push the Windows Backup app, which syncs selected folders to OneDrive and remembers apps and settings. It is useful, but it is not a full copy of the computer. Files outside the chosen folders are not included, it depends on your OneDrive storage allowance, and a file deleted on the PC may be deleted from OneDrive too once it syncs. Check OneDrive’s recycle bin and version history online before assuming something is gone.

When the backup drive has failed too

It is surprisingly common for the backup drive to fail around the same time as the computer, especially when both are of a similar age or the backup drive has spent years being knocked about in a bag. Warning signs include:

  • Clicking, beeping or grinding noises
  • The drive appearing and disappearing, or very slow copying
  • Windows asking to format the drive, or showing it as RAW
  • Error messages about cyclic redundancy checks or I/O device errors

If you see any of these, stop. Do not run CHKDSK, do not let Windows “repair” the drive, and do not keep retrying the restore, as each attempt puts more strain on a failing drive. A failed backup drive needs the same care as any other failing drive (see our external hard drive data recovery page), and once it has been read safely, the File History and system image structures described above make the files easier to put back together. If the original PC drive is also available, keep it, as it may hold newer files than the backup. See our Windows data recovery page for more on recovering from Windows computers.

Need help getting a backup back?

If the restore will not work and copying the files by hand is not possible, or the backup drive is showing signs of failure, we can help. We offer a free assessment with no obligation. Call Data Retrieval on 020 7064 4996 or request a quote online.