hello every body. here my problem is that,few of my files went hidden,and when i click on the show hidden files option,i can see the files. But the thing is that i cannot put them back to normal files. like when i click on properties, there the file extention cannot be removed from hidden.! i.e the hidden button there is not working.! i cant say you exactly but the hidden button there is some what like invisible. the files are very important to me.! they are sum 150gb materials related to my studies.! which i have been collecting since 2 long years . please help me.!