How to unhide hidden files through editing registry entry

a. Click “Start” the choose “Run…” (or press Windows key + R)
b. Type regedit and click OK. PLEASE do this with caution, incorrectly editing your registry entry might render your computer useless.
c. Browse the registry entry using the left panel HKEY_LOCAL_MACHINE > SOFTWARE > Microsoft > Windows > CurrentVersion > Explorer > Advanced > Folder > Hidden > SHOWALL
d. Look at the “CheckedValue” key… This should be a DWORD key. If it isn’t, delete the key.
e. Create a new key called “CheckedValue” as a DWORD (hexadecimal) with a value of 1.
f. Close the regedit, and you should be able to show hidden files again