Windows 10 File system error

Quick checklist before we start​

• Which Windows are you on? (Windows 10 or Windows 11)
• Can you open Task Manager (Ctrl+Shift+Esc)?
• Do you have a System Restore point or backup?
  Answer those and I’ll tailor the steps. Meanwhile, try the prioritized fixes below.

Steps to try (in order)​

• Press Ctrl+Shift+Esc to open Task Manager.
• In Task Manager: File → Run new task → type cmd.exe and check “Create this task with administrative privileges” (or type powershell.exe).
• In Task Manager you can also right‑click explorer.exe → End task, then File → Run new task → explorer.exe to restart the shell.

• In the elevated CMD/PowerShell run (this can take 10–30+ minutes):
  DISM /Online /Cleanup-Image /RestoreHealth
  sfc /scannow
• If DISM reports it repaired things, run sfc /scannow again. If SFC still reports unfixable files, save the SFC log:
  findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log > C:\sfclogs.txt
  (Attach C:\sfclogs.txt here if you want me to review.)

• Open PowerShell (admin) and run:
  Get-AppxPackage windows.immersivecontrolpanel | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
• You can also re-register Start/modern apps (may print non‑fatal errors):
  Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
• After these, restart explorer or reboot.

• List recent updates (in elevated CMD):
  wmic qfe list brief /format:table
  or (for feature/packages)
  dism /online /get-packages
• To uninstall a Windows Update (replace KB####### with the KB from wmic):
  wusa /uninstall /kb:#######
  or to remove a package from DISM:
  dism /online /remove-package /PackageNameackage_for_KBxxxxx~31bf3856ad364e35~amd64~~10.0.1.2
• If Settings are inaccessible, use WinRE to uninstall updates: Shift+Restart (from sign‑in screen or hold Shift while choosing Restart) → Troubleshoot → Advanced options → Uninstall Updates → “Uninstall latest quality update” or “Uninstall latest feature update”.

• In WinRE: Troubleshoot → Advanced options → System Restore (if you have a restore point).
• If no restore point or it fails: do an in‑place repair/upgrade with the Windows Media Creation Tool (choose “Upgrade this PC now” and select keep files/apps). This usually fixes corruption and preserves programs/data.

• Run chkdsk to rule out drive errors (schedule and reboot if required):
  chkdsk C: /f /r
• Back up important files before uninstalling updates or doing a repair install.

Notes about symptoms you described​

• File system error (-2144927436) for ms-settings and Start/Windows key failures commonly indicate component-store or Settings package corruption; DISM → SFC → re-register apps often fixes it.
• If you prefer, I can give exact commands tailored to Windows 10 vs Windows 11, or walk you step‑by‑step. If SFC still reports unfixable files, upload the sfclogs.txt (or paste the output) and I’ll inspect them.