Reinstate+Task+Manager+if+a+Virus+Disables+It

 Sometimes, a virus infection may completely disable the Task Manager. Without the Task Manager you will not be able to see what processes are running in the background, making it less likely for you to spot (and kill) the virus. Giving your PC a full scan with your anti-virus software will rid you of the infection, but it probably will not re-enable the Task Manager. To get it back you need to apply a quick registry tweak, which you can apply as follows:
 * 1) Click **Start** > **All Programs** > **Accessories**, right-click **Command Prompt** and choose **Run as administrator** (XP users just click **Command Prompt**).
 * 2) Type: **REG add HKCU\​Software\​Microsoft\​Windows\​CurrentVersion\​Policies\​System/vDisableTaskMgr/tREG_DWORD/d0/f** and press [**Enter**].
 * 3) Type **EXIT** and press [**Enter**].