Folder Option Missing, Regedit & Task Manager disabled

Here is the solution for common annoying troubles done by most of viruses.
Now you can show folder option back and enabling registry editor as well as task manager..
Here is what you need to do:
Copy the following code,paste in any notepad and save as "EnableRegEdit.inf" . Right-click and install; your regedit will be enabled.(Be careful to copy the code exactly as presented here including everything.
___________________________________________________________________________________
[Version]
Signature="$Chicago$"
Provider=Symantec
[DefaultInstall]
AddReg=UnhookRegKey
[UnhookRegKey]
HKLM, Software\CLASSES\batfile\shell\open\command,,,"""%1"" %*"
HKLM, Software\CLASSES\comfile\shell\open\command,,,"""%1"" %*"
HKLM, Software\CLASSES\exefile\shell\open\command,,,"""%1"" %*"
HKLM, Software\CLASSES\piffile\shell\open\command,,,"""%1"" %*"
HKLM, Software\CLASSES\regfile\shell\open\command,,,"regedit.exe ""%1"""
HKLM, Software\CLASSES\scrfile\shell\open\command,,,"""%1"" %*"
HKCU, Software\Microsoft\Windows\CurrentVersion\Policies\System,DisableRegistryTools,0x00000020,0
_________________________________________________________________________________


To enable Folder Options, copy following code,paste it in any notepad and save as "folderoptions.reg" file. Double click it and your folder options will be restored.
_________________________________________________________________________________
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoFolderOptions"=dword:0000000
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Restrictions]
"NoBrowserOptions"=dword:00000000
__________________________________________________________________________________


To enable Task Manager, copy following code,paste it in any notepad and save as "EnableTaskManager.reg" file. Double click it and your folder options will be restored.
_________________________________________________________________________
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr"=dword:0000000

source : http://forum.bullguard.com/forum/11/My-folder-option-missing--my-r_37013.html

Task Manager has been disabled by your administrator

Enabling Task Manager.

When you try to open Task Manager, the following error may occur:

Task Manager has been disabled by your administrator

This error is caused if the DisableTaskMgr restriction is enabled. To enable Task Manager, try one of these methods:

Note that If this restriction was enabled in your system without you doing anything or without your knowledge, then it's highly likely that a Virus has blocked the usage of Task Manager in your system by enabling the DisableTaskMgr policy via the registry. I strongly suggest that you perform a thorough checkup of your system immediately. Steps listed in the Resolution section of this article helps you unblock the Task Manager, but that does not remove the Virus (if any) from your system.

Method 1

Click Start, Run and type this command exactly as given below: (better - Copy and paste)
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f

Method 2

* Click Start, Run and type Regedit.exe
* Navigate to the following branch:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Policies\ System

* In the right-pane, delete the value named DisableTaskMgr
* Close Regedit.exe

Method 4: Using Group Policy Editor - for Windows XP Professional

* Click Start, Run, type gpedit.msc and click OK.
* Navigate to this branch:

User Configuration / Administrative Templates / System / Ctrl+Alt+Delete Options / Remove Task Manager

* Double-click the Remove Task Manager option.
* Set the policy to Not Configured.