Can not see hidden files?

1.perform the following Steps but the modify key value reverts back to 0. Go to Start --> Run, then type Regedit
2. Navigate to the registry folder HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\ CurrentVersion\Explorer\Advanced\Folder\Hidden\SHO WALL
3. Find a key called CheckedValue.
4. Double Click CheckedValue key and modify it to 1. This is to show all the hidden files.)