SHUT DOWN UR PC IN 1 SECOND FOR XP

Right click on windows task-bar select task-manager then select shut-down button then u will see options like standby, hibernate, turn-off, restart..... then hold control key and press shut-down button and see the trick ur system shuts-down in 1 sec

NOTE: 

Don't use this trick its not save ur setting use when ur computer hangs or in problem.