Help please.

I just got a Sansa clip from best buy *because my Zen V broke* It all looks fine except when I thought I moved songs onto it it didn’t have them when I unplugged it, now when I plug it back in it says:

writeing

connected

writeing

disconected

(repeat)

While it plays the 5 sample songs it came with.

Help.

Did you try a re-set?  (On switch held uppermost for 10-15 seconds.)