Let's face it. All of us have been infected by virus before. Even if you have anti-virus installed, you can still be infected by a new or custom virus that is not recognized by your anti-virus. Sometimes after removing the virus completely from our system, you'll face new problems such as you can no longer bring up Windows Task Manager from CTRL+ALT+DEL. You get the error message saying "Task Manager has been disabled by your administrator".

You think that it's easy to fix this problem by going to Registry Editor but you can't! You get the error message "Registry editing has been disabled by your administrator".

Folder Options and even Show Hidden Files & Folder is disabled! How frustrating! Don't worry, here's how to restore your Windows Task Manager, Registry Editor, Folder Options and Show hidden files & folders.


This problem is most commonly caused by a virus called "Brontok". Brontok virus will make some changes to the system restrictions in order to hide itself from easy detection and also from easy cleaning.

Here's a free tool called Remove Restrictions Tool (RRT) which is able to re-enables all what the virus had previously disabled, and gives you back the control over your own computer.

Remove Restrictions Tool is able to re-enable:
- Registry Tools (regedit)
- Ctrl+Alt+Del
- Folder Options
- Show Hidden Files

Small and easy to use. Make sure you boot in to Safe Mode to use Remove Restrictions Tool (RRT). Just click on the buttons and it'll do it's job.

Download Remove Restrictions Tool (RRT)

Khi máy tính bị nhiễm một số loại virus hoặc thậm chí sau khi đã diệt sạch virus, bạn không tìm thấy hàng chữ Folder Options trong menu Tools của cửa sổ My Computer (hoặc Windows Explorer).

cũng như hàng chữ Task Manager bị mờ đi trong menu hiện ra khi bấm chuột phải lên thanh taskbar, đồng thời bấm Start > Run, gõ regedit thì không chạy được. Để có lại ba thành phần này, bạn thực hiện các cách sau:

Khôi phục Folder Options

Bạn bấm Start > Run, gõ gpedit.msc rồi bấm Enter. Ở cửa sổ Group Policy hiện ra, trong khung bên trái, lần lượt bấm dấu cộng (+) trước các hàng chữ: User Configuration; Administrative Templates; Windows Components; bấm chuột lên hàng chữ Windows Explorer; bấm đúp chuột lên hàng chữ Remove the Folder Options menu item from the Tools menu, bấm chọn Disable ở cửa sổ hiện ra và bấm OK.

Nếu vẫn chưa thấy Folder Options xuất hiện trong menu Tools, bạn thực hiện lại 2 lần thao tác trên: Chọn Enable ở lần thứ nhất và Disable ở lần thứ hai.

Khôi phục Task Manager

Trong khung bên trái của cửa sổ Group Policy nói trên, bạn cũng lần lượt bấm dấu cộng (+) trước các hàng chữ: User Configuration, Administrative Templates, System, Ctrl+Alt+Del Options. Bấm đúp chuột lên hàng chữ Remove Task Manager trong khung bên trái, bấm chọn Disable ở cửa sổ hiện ra, bấm OK.

Nếu Task Manager vẫn bị mờ hoặc thấy cửa sổ Windows Task Manager chỉ chớp lên khi bấm tổ hợp 3 phím Ctrl + Alt + Del, bạn thực hiện lại thao tác trên với lựa chọn Enable và Disable như ở phần Folder Options.

Khôi phục lệnh Regedit

Trong cửa sổ Group Policy, bạn lần lượt bấm dấu cộng (+) trước các hàng chữ: User Configuration, Administrative Templates, System. Bấm đúp chuột lên hàng chữ Prevent access to registry editing tools trong khung bên trái, bấm chọn Disable ở cửa sổ hiện ra, bấm OK. Có thể bạn cũng sẽ phải thực hiện lại như khi khôi phục Folder Options, Task Manager để chạy được lệnh này.

Sau khi khôi phục 3 thành phần trên, bạn khởi động lại máy tính. Nếu chúng tiếp tục bị mất là máy tính của bạn vẫn còn bị nhiễm virus. Do vậy, bạn tiếp tục cập nhật chương trình diệt virus đang dùng hoặc cài chương trình diệt virus khác để quét toàn bộ đĩa cứng và đĩa flash USB.

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Most suites or programs of Microsoft Office 2007 allows user to evaluate the product. The trial version of 2007 Microsoft Office system can be installed by using a 25-character trial product key available from Microsoft while you download the free Office software, and you can use the Microsoft Office 2007 suite or program with full functionality for 60 days.

You may have the Office 2007 CD and are able to install Office 2007 without entering product key. However, Office 2007 will work in reduced functionality mode, where it’s effectively just a viewer for Office documents. Beside, if you forget the trial product key, or don’t wish to register a Windows Live ID to get the trial key, here’s the trick to activate Office 2007, or more correctly, bypass the activation of Office 2007 60 days trial, and making the “trial” word disappear from the Office title at the top and suppress activation and trial expiry prompt.

Note that to use Microsoft Office 2007 beyond 60 days trial period, you need to purchase a valid license for it, available from Amazon or most computer retail store.

To use this hack to crack activation on Office 2007, you need to install Office 2007 without any serial number or product key. If you have installed Office 2007 with a product key or serial number, do the following to clean remove Office 2007 of product key:

1. Close all Microsoft Office applications.
2. Run Register Editor by clicking on Start -> Run, and then type “regedit” in the Open box and press Enter key.
3. Navigate to the following registry key:

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Registration

   Note that inside the registry key, there should be another subkey that resembles the following:

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Registration\
   {90120000-0030-0000-0000-0000000FF1CE

   or

   HKEY_LOCAL_MACHINE\Software\Microsoft\Office\12.0\Registration\
   {91120000-0011-0000-0000-0000000FF1CE

4. If there is more than one registry entries or subkeys that reference Microsoft 12.0 registration, open up each subkey, and then identify the product by the ProductName value data until you locate the subkey for the product which you want to remove the existing product license key.

   For example:

   ProductName=Microsoft Office Professional Plus 2007
   ProductName=Microsoft Office Enterprise 2007

5. Once found the correct registry subkey, delete the following values:

   DigitalProductID
   ProductID

6. Close Registry Editor.

Once Microsoft Office 2007 has been installed with no product key, proceed with the following steps:

1. In Windows Explorer, brose to the following folder:

   C:\Program Files\Common Files\Microsoft Shared\OFFICE12\Office Setup Controller\Proof.en\

2. Right click on Proof.XML file, select “Open With…” in the right click menu.
3. In the “Open With” window, select Notepad to be used to open the XML file. In Vista, if you can’t see the Notepad option, simply double click the “Other Programs” to unhide it.
4. Scroll down to the bottom of the Proof.XML to locate the following lines:

   </Feature> <Feature Id=”SetupXmlFiles” Cost=”1248″>
   <OptionRef Id=”AlwaysInstalled”/>
   </Feature>

5. Change the AlwaysInsalled to neverInstalled so that the line looks like following:

   <OptionRef Id=”neverInstalled”/>

6. Save the Proof.xml file. In Windows Vista, you may need to take ownership and grant full access permission to yourself before able to modify the file.
7. You can now launch Microsoft Office 2007 application such as Word, Excel, Powerpoint, Outlook and etc without prompting for activation.

As usual, as it’s a hack, and before you purchase a valid product key for it, you won’t be able to AND can’t access any updates or Microsoft Office Online.