1) Press Ctrl + R to open the RUN command.
2) Type the below code given below.
at 9:45(any time which you require) shutdown -s
If you want to abort the shutdown from being automatically shutting down after you have given the code you have a enter again a command which stops being shutting down the system.
1) Press Ctrl + R to open the RUN command.
2) Type the below code to stop shutting down
at 9:45(any time which you require) shutdown -a
![Image](http://i57.tinypic.com/2i95fvc.jpg)
If you want to use a free software to shutdown the system automatically at a given time then the best software is Freeshutdown Timer.with this software you can Shutdown, Restart, Log off, Lock, Hibernate and Standby operations. Since this is a freeware software i have uploaded the setup file of Freeshutdown Timer in 4shared.com so you can download directly from the below link.
https://www.mediafire.com/?4d5ci9p99vk05qy" onclick="window.open(this.href);return false;