Nothing Happens

The first time I connected my sansa clip 1 to my comp everything worked fine

The second time i got no response from my comp it shows on the player that it is connected and it is charging but nothing shows on my computer screen i can find it through menu>computer but i can’t get that original screen where i can sync the music that i have downloaded my music is only viewable in folder form … So my QUESTION is how do i open that original screen … the promt to sync or view that used to pop up initially with usb connection?