How to activate the regedit command in my system which is disable

1. Right click anywhere there is open space on your desktop and left click on Personalize
2. Click on Window Color and Appearance.
3. At the bottom of the Windows Color and Appearance window click “Open classic appearance properties for more color options”
4. Look on the scroll list and see what scheme is set, more then likely it is defaulted to "Windows Vista Basic”, ensure that Enable Transparency is checked.
5. Look at the scroll list and select "Windows Aero" as the new scheme
6. Click on Apply and then click OK
7. When you get back to your desktop you should be able to see the background through the borders of open windows now!

Advanced Troubleshooting – Use these steps if required.

1. From the Start button, type REGEDIT into the Search box, then press Enter to launch the Registry Editor (regedit.exe).
Note: If you did not disable UAC (read my "Disable User Account Control in Windows Vista " article) then you will be prompted to consent to the action you're about to perform. Click Continue.
2. Locate the following key in the registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\DWM
3. Modify the following value (REG_DWORD):
Composition-Change the existing value to 1.
4. Modify the following value (REG_DWORD): Composition Policy. Change the existing value to 2.
5. Close Registry Editor.
6. Open an elevated Command Prompt window.
7. In the Command Prompt window, type :- net stop uxsms press Enter.
Wait for the Desktop Window Manager Session Manager service to stop, then type in :- net start uxsms .
8. We *might* need to restart your computer.

Regards,
Shrey

Virus attack is common these days and we often come across the problems like Disabled Folder Options or like Task Manager and Regedit disabled by Administrator. These problems are nothing but virus activities. The virus has infected our system and stopping us from accessing these options.

Pressing keys Ctrl+Alt+Del opens up a dialog saying that “Task Manager has been disabled by your Administrator” whereas you are the Administrator yourself. It becomes very annoying when you think that you can fix this problem by going into the Registry Editor but it doesn’t show up. Even the Folder Options gets disabled.
This problem is generally caused by a virus named “Brontok” but don’t worry just use RRT (Remove Restrictions Tool) that can easily solve this problem. RRT is free and can successfully enable:
1. Folder Options
2. Regedit (Registry Editor)
3. Task Manager
4. Show Hidden Files option
The tool will come more useful if you use it in Safe Mode.
Download RRT