show hidden files not working

1. Go to your Start menu, click on Run and open up your Registry
Editor by typing "regedit" without the quotes and pressing OK.
2. Once there go to:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVer
sion\Explorer\Advanced\Folde r\Hidden\SHOWALL
3. Delete the value CheckedValue. (Its type should be REG_SZ and
data should be 0 or 1.)
4. Create a new DWORD value called CheckedValue (same as
above, except that the type is REG_DWORD) by right clicking on
the right pane->New->DWORD Value. Modify the value data to 1
(0x00000001).