U disk does not work!

My Tsinghua Unisplendour 4G of the recent U disk does not work, connect a computer, the computer can be identified! ! ! But that is not open, showed that “the data page or damage to the directory and can not read,” Please help us to see ah! I have important information inside ……

like format, look no, not if there is the hardware format does not work Look, there's no data, said the landlord, there are important.Recommendation to do data recovery, data copy to go inside, but very expensive.After making, has not seen the shelf-life, if not , A for-