USB Code 43 can appear for a device, hub, or controller. The Device Manager name and physical connection help identify the right support path.
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
Which USB entry shows Code 43, cable and port used, and whether the device works on another trusted PC.
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
Try a safe cable or port check if there is no physical damage. Use the exact device or PC maker’s official driver and diagnostic information.
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
Do not reconnect a damaged connector or a device that becomes hot.
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.