When virus attacked our computer, automatically the option "Show hidden files" is not working. There is a solution for this problem. Only we need to change some values in registry. To do this go to Start->Run and type "regedit" press OK button. Then a Registry Editor window is opened. Then go to below location
"HKEY_LOCAL_MACHIE/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced/Folder/
Hidden/ShowAll"
After look at the right portion of the Registry Editor window you will see two files like
"Checked Value" and
"Default Value"
First double click on Checked Value, then a new window is opened like "Edit DWORD Value", the value inside in the text box must be "1" otherwise change it to one, press OK button.
And double click on Default Value, then also a window opened as mentioned above, the value inside in the text box must be "2" otherwise change it to two, and press OK.
Now you are Done.
"HKEY_LOCAL_MACHIE/Software/Microsoft/Windows/CurrentVersion/Explorer/Advanced/Folder/
Hidden/ShowAll"
After look at the right portion of the Registry Editor window you will see two files like
"Checked Value" and
"Default Value"
First double click on Checked Value, then a new window is opened like "Edit DWORD Value", the value inside in the text box must be "1" otherwise change it to one, press OK button.
And double click on Default Value, then also a window opened as mentioned above, the value inside in the text box must be "2" otherwise change it to two, and press OK.
Now you are Done.