laptop auto shutdown and reboot with no reason. Hardware scan has no issue.

Unexpected shutdowns and automatic restarts on Windows 11 Enterprise are typically caused by drivers, software, or power issues, even when hardware scans show no faults.

Try these steps in order:

1. Remove any recently added hardware

• If any new device (USB, external GPU, docking station, etc.) was connected before the issue started, shut down the laptop, disconnect it, and boot again.

2. Boot into Safe Mode

• Start in Safe Mode to see if the issue is caused by drivers or third‑party software.
• Follow: Start your PC in safe mode in Windows 11 (from the linked article in the context). If the laptop is stable in Safe Mode, the cause is likely a driver or app.

3. Check Device Manager for driver problems

• Right‑click Start → Device Manager.
• Look for any devices with a yellow exclamation mark (!).
• For each such device:
  • Right‑click → Update driver.
  • If that does not help, right‑click → Disable device or Uninstall device and restart.

4. Check disk free space

• Ensure the system drive (usually C:) has at least 10–15% free space so Windows can create swap files and operate normally.

5. Install the latest Windows 11 updates

• Go to Start → Settings → Windows Update → Check for updates.
• Install all available updates and restart. This also ensures any known shutdown/restart bugs are fixed.

6. Check for improper shutdown events

• Open Event Viewer → Windows Logs → System.
• Look for Critical events with Source: Microsoft-Windows-Kernel-Power and Event ID: 41 around the time of the unexpected restart.
  • Event ID 41 confirms Windows detected an unexpected restart (crash, hang, or power loss).
  • Also review related Event ID 6008 (unexpected shutdown) and Event ID 1074 (user/app‑initiated restart) to see if any application is triggering restarts.

7. If the issue persists

• Use System Restore or other options under Settings → System → Recovery (or via Windows Recovery Environment) as described in Recovery options in Windows 11 to roll back to a stable state.
• For advanced analysis (e.g., repeated blue/black screens with stop codes), follow the Advanced troubleshooting steps for Windows blue screens, black screens and stop code errors linked from the basic troubleshooting article.

If the laptop continues to restart unexpectedly after all these steps, collect the Event Viewer logs (especially Kernel-Power Event ID 41 entries and any stop codes shown on blue/black screens) and provide them to IT support for deeper analysis.

References:

• Troubleshooting Windows unexpected restarts and stop code errors
• Advanced troubleshooting for Event ID 41: "The system has rebooted without cleanly shutting down first"