Hi jbeckham,
I hate to hear you are having issues. Please see the below links for available software for this unit. Depending on your system specifications you may or may not be able to run the full feature software. A basic driver may be the best resolution for the type of system you are running (this can be accessed with links below). If you are unable to locate workable drivers from the links, a generic driver may help. Here is a link with steps for that. Click Here
HP Officejet Pro 8600 e-All-in-One Printer Click Here
HP Officejet Pro 8600 Plus e-All-in-One Printer Click Here
HP Officejet Pro 8600 Premium e-All-in-One Click Here
Note: installation for an embedded system will depend on what the system is designed or programmed for, as some embedded systems are designed to complete specific tasks and others have a broader range of functionalities.
Hope this helps!