: If issues persist, right-click the printer list in macOS settings and select Reset printing system . This clears all devices and allows a fresh start. Step 4: Configure the Scanner Driver Separately

Download the package. This comprehensive package includes both the printing driver and the scanning module (TWAIN/WIA). 3. Step-by-Step Installation Procedures

While HP pushes the HP Smart App, the traditional full-feature driver package is significantly more stable for the MFP 178nw model. To help troubleshoot further, let me know:

The full driver package includes:

Run the app and follow the prompts to install the necessary drivers.

Avoid third-party driver download sites, which often bundle malware or outdated software.

Do not rely solely on Windows Update to find the best driver for this specific model. For the full functionality (including scanning and printer status reports), you must download the official Full Solution Software package. Navigate to the official .

| Issue | Likely Cause | Potential Solution | | :--- | :--- | :--- | | | Windows installed a generic driver, especially on ARM64 systems. | Disconnect the USB cable and reinstall the printer using the HP Smart app over a Wi-Fi connection. | | Yellow exclamation mark in Device Manager | Driver conflict or corruption. | Uninstall the problematic driver from Device Manager, restart your PC, and reinstall the official driver from HP. | | Fatal error during installation | The computer doesn't recognize the printer driver. | When the installation prompts you to connect the USB cable, use Device Manager to manually select the correct HP printer driver from the list of available drivers. | | Printer prints symbols or garbage text | Incorrect or corrupted driver, especially on macOS. | Use the HP Smart App's "Diagnose & Fix" tool. If that fails, remove the printer from System Preferences and re-add it using the HP Smart App. | | Printer offline or unavailable | Connection issue (Wi-Fi/USB). The printer might be in an error state, or there might be a problem with the print spooler on your computer. | First, try the HP Smart app's "Diagnose & Fix" tool . Check the printer's control panel for error lights. Restart your printer, computer, and router. | | Scanning not working | You only installed the basic print driver, not the full software package. | Uninstall the basic driver and reinstall using the "Full Solution Software and Drivers" option from the HP website. This will include the necessary TWAIN/WIA scan drivers. | | Connection lost after router restart | The printer's IP address may have changed if not assigned a static/reserved IP in your router settings. | Set up a "static IP" or "DHCP reservation" for your printer within your router's admin settings. This ensures it always gets the same network address. | | Bricked printer after firmware update | A failed or corrupted firmware update has rendered the printer unusable. | This is a serious issue. Contact HP Support for advanced recovery steps. You can sometimes enter a "wait image" mode by holding specific buttons on power-up to attempt a manual USB firmware reinstallation. |

Follow the on-screen instructions to finish the installation. Setting Up Wi-Fi (178nw Wireless Setup)