Enabled Disabled regedit and disabled taskmanager ;)

First method (This worked instantly for me..)

Type this command in Run box and press Ok.

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f

Second method

Using Group Policy editor. Once again in the Run box, type gpedit.msc and press Ok. Go to User Configuration-Administrative Templates-System, double click Disable registry editing tools and set it to Not Configured. Exit Group Policy editor.

UPDATE: Start your computer in safe mode with command prompt and type the following command to enable registry editor:-

reg delete HKCU\software\microsoft\windows\currentversion\policies\system /v “DisableRegistryTools”
and run HKLM\software\microsoft\windows\currentversion\policies\system /v “DisableRegistryTools”

After you have run both commands your registry editor should be enabled

This does work!!!!! Believe it or not...
then now we need to fix what caused the problem.. Which is Brontok Virus...this is what causes the taskmanager and regedit functions to be disabled.

If anyone knows how to do this...please leave a comment letting us know how to do it..