when i connect my sansa fuze to my computer nothing pops up just stays the same

ok Saturday evening when i was charging my sansa everything was working the same but i woke up in the morning to put some new videos then i connected my sansa to my computer then nothing popes up then im like weird tried reconnecting that didnt work then i’m like maybe its the computer so i restarted my computer then that didnt work so im like maybe i have format it that just took away all my songs and vids >=( and I’ve tried changing usb ports and tried different cables and computer but nothing shows just it charging it’s self so if anyone who knows what to do please reply to this because im tired of go-ogling things doesn’t work just lots and lots of LINKS!!!