These are instructions when using Windows 7 and concerning the HP PhotoSmart All-in-One Driver Software 13.0 Rel. 2. If you have another version or another printer series, the instructions may differ.
- Go to the system try in the notification area, right click on "HP Digital Imaging Monitor"
- Move cursor over "Camera Phone Photos"
- Click "Turn off HP Import"
That will prevent HP Photo Essentials from starting if you only have the printer connected one way.
If you are conneccted to the printer multiple ways, such as USB and via your network, you can prevent HP Photo Essentials from starting, but HP Solution Center will still pop-up.