Format not supported with this device?? HELP

[James Gregory]

I keep getting this error with what ever i try to change? They did work for 10 min not any more?

 

[ssddx]

be more specific, otherwise we cannot help you as your post is not understandable.

WHAT are you trying to do?
WHEN are you getting the error?
WHAT device(s) are you using which this occurs on?

 

[James Gregory]

Im trying to connect my z506 logitech speakers to mp pc which is a XPS 8500.
Im getting the error when i plug in the speakers, especially when i connect my orange and black wires which are for the rear speakers.
It might be a possibility that my sound card is not compatible. But when i first plugged thee speaker hub in with the green wire it worked no problems, i only plugged in the green wire, not the orange and the black. After i found it was working i went to configure it to 5.1 which it is. After that it stopped working so i fiddled around and plugged in the orange and the black for the first time nd nothing happened.

 

[James Gregory]

The speaker hub*