need help to connect

my sansa clip was once freez, so i updated it. it work well for about 6 or 7 months. then for awhile the screen turn upside-down, and it still work. so i ignore it. the next day, i was listening to music on my sansa clip, the screen still turn upside-down. for 4 or 5 minutes it freez again. i connect it to my computer, and it wont connect. i even try switch it on hold and pressing the center button, it wont connect. so can any body give me some advice!!

oh um i just find out that it does connect, but the screen was upside-down.

(can any body help me)