Here are a few steps that may help regain a lost Wi-Fi connection:

1. Ensure that the connection status of your router and modem is active.
2. Remove any obstructions near the signal such as walls or filing cabinets.
3. Restart the router, modem, and printer.
4. Check if the Wi-Fi printer has the latest firmware version.
5. Ensure that the printer accesses the same Wi-Fi as your computer.