The nho bi gi do

Em moi mua cai the 512 ,khong biet bam nham cai gi do bay gio vao thi no hien "the disk in drive E is not formatted " bam no thi khong co gi xay ra ,con yes thi no lai hien "format removable disk (E)" bam vao start thi hien cai khung bao minh bam " Ok hoac cancel" bam vao Ok thi mot lac sao lai hien "Windows was unable to complete the format" bam ok thi khong co gi xay ra va the nho cua em khong mo duoc! anh chi nao biet cach khac phuc giup em voi !!!