Can't open files in a 4G Cruzer Flash Drive

[DKN]

Hi there. I used my cruzer flash drive for long long hours. All of a sudden I tried to safe my document and ALAS! The drive was not availbal although I could see it on the comp. I tried several times to open the drive and with a different computer. Sometimes I can see all my files inside but they can't open. Other times the drive shows that it is has 0 available bites and 0 used bites. I scanned for viruses and nothing was picked up. How can I retrived these files? I Even copied them to a different drive but still they can't open. Thanks

[arvika]

Try resolder the nand flash pins.