HP Solution Center for Windows 7/64

Hp Solution Center it use to work (with some problems but it used to work). Now it does not any more.
I have reinstalled it from the original CD an from HP downloads (the latest whatever that is) to no vail.
it worked ok only after inserting the printer directly to the PC via USB. After reinstalling the printer the way I like it (that is "network printer" attached to a modem accesible from other in house PC) the Solution Center is no longer accessible and gives me the usual: can not run because your device installation is not complete etc..
HP should come with a solution as this is a common problem affecting various printers on various Windows issues. I do not think there is a solution as it stands unless someone knows better.