A persistent Preparing Automatic Repair screen is a startup symptom, not a specific error code. Check whether it eventually opens Windows RE.
Protect your files first
Back up important files when possible. If the drive is encrypted, locate the BitLocker recovery key before recovery changes. Stop if storage appears to be failing or this is a work or school managed PC.
What to record
Screen text, duration, any error code, and whether the storage device appears in firmware.
The exact message, Windows version, and whether the desktop still opens matter more than a guess based on the symptom name.
Try these safer checks
Use the manufacturer’s diagnostics if the drive is missing; if Windows RE opens, review Startup Repair and record its result.
Change one thing at a time. After each check, see whether the same symptom returns and write down what changed.
When to stop and get help
Avoid reset, format, or boot-record commands before backup and encryption-key checks.
If this is a work or school device, contact its administrator before changing managed settings.
Keep track of your checks
This checklist stays in this browser session. It is not sent to WinErrors.