- Category: All-in-One Wireless Printer (Multifunction)
- Hardware: HP Photosmart C4780.
- Software: Scanner and printer driver.
- Language: Multi-language.
This printer does not have compatible drivers for current operating systems; however, it may be possible to use it with Windows’ built-in drivers.

Installing the printer function

Connect the Printer
- Turn on your HP Photosmart C4780 printer.
- Plug the printer’s USB cable into an available USB port on your computer.
Allow Windows to Detect the Printer
- Windows will attempt to detect the printer and may start installing drivers automatically.
- If prompted, click on the notification to allow Windows to search for and install drivers.
Install the Built-in Drivers Manually (If Needed)
- If the automatic installation doesn’t occur:
- Open the Start menu and search for “Devices and Printers”.
- Click on “Add a printer” located at the top of the window.
- Windows will search for available printers. When your HP Photosmart C4780 appears, select it.
- Click “Next” and follow the on-screen instructions to complete the installation.
Confirm Printer Installation
- After installation, go to Devices and Printers again.
- Verify that the HP Photosmart C4780 is listed as an installed printer.
Print a Test Page
- Right-click on the HP Photosmart C4780 in Devices and Printers.
- Select “Printer properties” and then click on “Print Test Page” to ensure the printer is working correctly.
Your printer should now be successfully installed and ready to use!
Installing the Scanner Function
Check if Scanner Drivers are Installed Automatically
- Once the printer is installed, Windows may automatically install the necessary drivers for the scanner.
- Open the Start menu, search for “Windows Fax and Scan”, and open the app.
- Click “New Scan” and see if your HP Photosmart C4780 scanner is listed.
Manually Install Scanner Drivers (If Needed)
- If the scanner doesn’t appear in the list, you may need to manually search for and install the drivers.
- Open the Device Manager by pressing Windows + X and selecting Device Manager.
- Expand the category Imaging devices and see if your HP Photosmart C4780 scanner is listed.
- If it is not listed, right-click on Imaging devices and select “Scan for hardware changes”.
- Windows will search for the scanner drivers and install them automatically.
Using the Scanner
- Method 1: Windows Fax and Scan
- Open Windows Fax and Scan from the Start menu.
- Click “New Scan” and select the HP Photosmart C4780 from the list of available scanners.
- Adjust the scan settings and click “Scan” to begin scanning your document.
- Method 2: Microsoft Paint
- Open Microsoft Paint from the Start menu.
- Click File > “From scanner or camera”.
- Select your HP Photosmart C4780 and follow the prompts to scan the document.
Alternative: Download Full HP Driver Package
- If the scanner still doesn’t work after these steps, visit the official HP website and download the full driver package for the HP Photosmart C4780.
- This package will include both the printer and scanner drivers.
Now, your HP Photosmart C4780 should be ready for both printing and scanning using Windows built-in drivers.