I am facing issue of files or data disappearance from whole drives when i start my computer on the next day..i am not connected with any network or wireless router,,i have neither shared nor attached any other pc or device, my computer is handled by me only..only one time a strange thing happened my kaspersky software was auto parental controlled by the password,,that made me in doubt that some one is accessing it but no any information in windows session or any mysterious file running in services could be found this thing happened only once than i installed AVG and windows 8.1 but same issue of files disappearing mysteriously is still a big headache,, even the check points of restore values are missing from windows,,what exactly is happening with me...some one guide if any one has faced same issue and solved it i ll be thankful