New ipod nano not stayin connected

I tried 4 different usb ports... i tried resetting the ipod... i tried jiggling the connection,

EDIT*

For some reason my iPod Touch refuses to work from the ports on the front of my PC rig, but has no problem with the ones on the rear.

hmm... well.. i dont have ne in the front to try....

EDIT AGAIN*

My OS is windows btw