Such problem occurs when you are affected by a w32.USBworm or its varient. Although now there are updates to clean this worm but still you are not able to unhide hidden folders. In such case one of the following registry edits work for sure.
Go to Start –> Run, then type regedit and press Enter
Find a key called CheckedValue
Double Click “CheckedValue” key and modify it to “1“. This is to show all the hidden files.
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You can hide any of drive(s) by just adding two keys in windows registry
Type regedit and press enter. This will bring you to the registry editor.To hide any drive you have to follow these 2 steps
STEP1: Hidding Drive
goto HKEY_CURRENT_USER\Software\Microsoft\Windows\Curre ntVersion\Policies\Explorer now create a new DWORD value NoDrives and set its value as
2^(Alpha Number of Drive Letter-1)
where Alpha number are simple counting of alphabets from A to Z as 1 – 26
for example: to hide C drive
Alpha number of C is 3 so 2^(3-1) = 4 (decimal value)
If you want to hide more than one drive than calculate the value of each drive as explained and then set sum of those numbers as value
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Many time due to spywares or malwares you cannot change the Internet Explorer homepage. Even after running Anti-spyware like Spybot its not working. In such cases use the following trick to change it.
In Regedit, navigate to this key:
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel
In the right-hand pane, right-click the “HomePage” value, then select Modify. Change it to: 00 00 00 00
Also change either or these to zero 0 instead of 1 if present:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer] – DWORD “NoSetHomePage”=dword:00000001
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Restrictions] – DWORD “NoSetHomePage”=dword:00000001
If you don’t have this key, browse to:
and in the right hand pane, double click “Local Page” and set equal to “C:\WINDOWS\System\blank.htm” (no quotes) which will hopefully set your Home Page to blank and then allow you to subsequently modify it using Internet Options.
I’m sure this will solve the problem.
Editing Registry may cause OS failure. Edit registry only when you are sure of it. Make a backup of registry before editing.