clip+4G dead,pc shows removable disk but cant be opened

i just hold the home button and the power button together. now the clip plus wont even start. when connect to pc , pc shows a removable disk. but it cannot be opened. itsays the disk is not formated. i try to format it but pc says format cant be finished. please god help me.i just bought it yesterday.

I tried to format it but pc says unable to complete formating the disk. very frustrated!!!

yes.I tried reset by holding power for 30seconds or more. I also tried to reformatit when connected to pc which is a win 7system. but computer just pumps up alerts that format the clip plus cannot be completed.