Unable to Terminate Process The operation could not be completed

Hi Again,
I need help with some user credential details. I am the administrator for my PC and there is no other user account on my PC.
When I click on terminate a process, I am not able to terminate that process. This does not happen to only one specific process but happens to all the processes I try to terminate.
Please help.
Unable to Terminate Process
The operation could not be completed.
Access is denied.
OK
