Below is how to shutdown timer on Windows 7 you can try.
Open Command Prompt and type the command shutdown –s –t XXXX. The “XXXX” will be time in seconds you want to elapse before the computer shuts down. For example, shutdown –s –t 3600. It will shut down after 3600 seconds.
If you want to cancel the timer, you can type shotdown –a in the Command Prompt.
How to shutdown timer on Windows 7 with shortcut
Create shutdown timer shortcut
If you often make shutdown timer, you can make a shortcut for it. Below is how you do it:
Right click the desktop, choose New and select Shortcut.
Type shutdown.exe –s –t 3600 and click next.
Enter the name for the shortcut and finish.
To cancel the timer, create a second shortcut using shutdown.exe –a or enter the shutdown –a command in Command Prompt.