Recently I faced one virus disturbing, which is the virus preventing me to view hidden files on the windows XP environment.

The virus meddles with the ’Show hidden files and folders’ option in the Folder Options and the option keeps bouncing back to ‘Do not show hidden files and folders’, despite repeated trials.

So I google the web and found the solution to set this problem right:

Navigate to the windows registry:
Go to Start menu
Click Run
Type regedit in the text box and then click Enter.

When the Registry Editor opens, perform the following steps:

Go to the following registry key:

Go to HKEY_LOCAL_MACHINE and then open Software.Under this navigate to: Microsoft -> Windows ->  Current Version -> Explorer Then go to Advanced -> Folder -> Hidden -> SHOWALL
Change value of CheckedValue. (Right now it should be REG_SZ and data should be 2 or 0.)
Change the value data to 1 (0×00000001).

This should enable you to select the ‘Show hidden files and folders’ option without much problem.
Do drop in comments if there are further queries and we shall try to find answers.

Hope this will help you out from the problem!