sallu

This problem occurred when I connected my external hard Disk with an affected computer. I can not unhide the folders even after scanning with anti virus and antimalware. If go to properties of folder hidden tab is off . I cant unchecked it. I googled a lot but i could not find the proper sloution. I also used dos attribute option but failed. Please help me. To any computer I connect my hard disk, folders are hidden. This is my first thread in this forum, hope will get the solution here.