Windows won’t start

System Restore fails or gets stuck during recovery

Trying to use System Restore to fix a boot problem either fails with an error partway through, gets stuck at a percentage, or reports it couldn't complete and reverses the changes.

Difficulty
Intermediate
Time
30–90 minutes
DIY cost
$0
Pro cost
$80–$180

Symptoms

  • System Restore shows a progress screen that stalls
  • An error message appears saying restore was unsuccessful
  • Changes get reverted automatically after a failed attempt
  • PC returns to the same boot problem afterward

Likely causes

  • CommonCorrupted restore pointA restore point can itself be incomplete or damaged, causing the process to fail.
  • CommonDisk errors interfering with the restore operationThe same disk problems causing boot issues can also block the restore process.
  • PossibleAntivirus or security software blocking the restoreSome third-party security tools interfere with System Restore's file operations.
  • PossibleInsufficient disk space for the restore operationRestore operations need some free space to complete safely.
  • PossibleSystem files needed for restore are themselves corruptedIf Windows's own restore mechanism is damaged, restore itself may not run properly.

What to do

  1. If a specific restore point fails, try selecting an older available restore point instead, if more than one exists.
  2. Run 'chkdsk C: /f' from Command Prompt in the Recovery Environment before trying System Restore again, to rule out disk errors.
  3. Boot into Safe Mode (Advanced options > Startup Settings > Safe Mode) and try running System Restore from within Safe Mode, which avoids some third-party software conflicts.
  4. If System Restore consistently fails, use Recovery Environment's Command Prompt to check available space on the drive with 'wmic logicaldisk get size,freespace,caption'.
  5. Run 'sfc /scannow' to repair system files that might be blocking the restore process, then attempt System Restore again afterward.
  6. If restore points themselves seem corrupted, this feature may not be usable to fix the current problem; move to Startup Repair or Uninstall Updates instead.
  7. If nothing restores successfully, 'Reset this PC' with 'Keep my files' is a more drastic but often more reliable fallback.

Tools and parts

  • Bootable Windows installation USB drive

When to call a pro

If System Restore fails through every available restore point and Startup Repair also doesn't help, a technician can attempt a repair install or advise on a clean reinstall.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.