Here is a easy way to enable the Task Manager in Windows XP. Note : When the Task Manager is disabled, the CTRL+ALT+DELETE does not work, Task Manager will not appear in CTRL+ALT+DELETE, and Task Manager is grayed out when you right click on the Task Bar. Step 1 : Click Start Button Step 2 : Click Run Step 3 : Type regedit Step 4 : Click OK The Registry Editor will now open [ If your Registry edit function is desabled by any virus then first enable the registry edit function. Here is a way to enable the regedit function. Click here >> ] Step 5 : Browse to the following key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\system Step 6 : In the right pane, look for the value: DisableTaskMgr Step 7 : Right click DisableTaskMgr and select Delete. (When prompted with "Are you sure you want to delete this value", select Yes. Step 8 : Now browse to the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system Step 9 : In the right pane, look for the value: DisableTaskMgr Step 10 : Right click DisableTaskMgr and select Delete. (When prompted with "Are you sure you want to delete this value", select Yes. Step 11 : Close the Registry by choosing File | Exit Step 12 : You should now be able to access Task Manager. If not, reboot the machine into Safe Mode and repeat the steps outlined above. Good Luck :)