Reset Windows
Start again from a clean base, with or without keeping your files.
- Settings → System → Recovery → "Reset this PC".
- Choose "Keep my files" (apps removed) or "Remove everything".
- "Cloud download" reinstalls a fresh version of Windows; "Local reinstall" uses the files already present.
- For a resale, choose "Remove everything" then "Clean the drive".
- If Windows no longer starts: force a shutdown 3 times in a row during boot to open the recovery environment.
⚠️ Note your licence keys and back up your documents. If the disk is encrypted (BitLocker), keep the recovery key.