I don't know... I would not rule out a personal firewall or an antivirus software. These usually have the power to intercept operations like loading a dll. I would check their log if they provide one.
Seems really unlikely a personal firewall would do this. I guess antivirus might be possible (especially on a business machine locked down by a paranoid corporate IT security group) but on a home machine it again seems unlikely. You'd be hitting that wall with every piece of s/w installed on the machine.
I also think that using the command line may not be straightforward for somebody who has never worked on DOS or something similar...
That's more likely the real issue here unfortunately. And we only got here because wildbill999 was also unable to run the STICK Java version from the GUI for some reason.
"...Is not recognized as an internal or external command, operable program or batch file."
That means you have not successfully changed to the directory where the command you want to run is located.
On the win7 pc the cmd message was: "the system cannot find the path specified..."
That means you either incorrectly typed in the command line I gave you - or that command was from the information you gave me for your Win8 machine rather than your Win7 machine.
Posting actual screen shots of your command line window would be a big help here. You are almost certainly typing something incorrectly in each case and retyping the error messages in your response will not help us find what mistake was made.