Hello
If you're encountering the "The User Profile Service service failed the sign-in. User profile cannot be loaded." error on Windows 10 after performing a full reset, and you're unable to log in even with administrative privileges, there are several steps you can take to try to resolve the issue:
Restart in Safe Mode:
- Restart your computer and repeatedly press the F8 key before the Windows logo appears.
- Select "Safe Mode" from the Advanced Boot Options menu.
- Once in Safe Mode, try logging in with the affected user account. Safe Mode loads only essential drivers and services, which might allow you to bypass the error.
Check Registry Entries:
- Boot into Safe Mode (if possible).
- Press Win + R to open the Run dialog box.
- Type regedit and press Enter to open the Registry Editor.
- Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
- Check each subkey under ProfileList for the ProfileImagePath entry.
- Ensure that each entry corresponds to an existing user profile directory. If any entry points to a non-existent directory, delete the corresponding subkey.
- Restart your computer and try logging in again.
Use System Restore:
- If you have a system restore point created before the issue occurred, you can use System Restore to revert your system to a previous state.
- Boot into the Advanced Startup Options menu (you may need to use a Windows installation media).
- Select "Troubleshoot" > "Advanced Options" > "System Restore."
- Follow the on-screen instructions to select a restore point and initiate the restoration process.
Perform a Repair Install:
- If none of the above methods work, you may need to perform a repair install of Windows 10. This process reinstalls Windows while preserving your files, applications, and settings.
- You'll need a Windows 10 installation media (USB drive or DVD).
- Boot from the installation media and choose "Install Now."
- Follow the on-screen instructions until you reach the "Ready to install" screen.
- Select "Change what to keep" and choose "Keep personal files and apps."
- Continue with the installation process, and Windows will reinstall while preserving your data and applications.