Tasklist merely enumerates all the tasks that are running at present. You can do the same thing by pressing Ctrl-Alt-Delete and opening up Task Manager.
This may also help.
http://forum.soft32.com/windows/command-prompt-tasklist-logon-failure-ftopict278510.htmlThe problem is that DCOM is causing WMI to run at a wrong permission level.
To fix this problem:
1) Press Win+R while you are at the desktop to bring up the Run menu.
2) Type in DCOMCNFG and press "Run"
3) Something like this should come up:
4) After that, right click on the "My Computer" text and hit “Properties"
5) Set the appropriate permissions:
6) Set the appropriate access permissions:
7) Then press "OK" for everything and you should be done.