ill close by itself in your computer, without any type of software.

1 /  hours  means 3600 seconds. First on your PC, right-click an empty area of the shortcut to open new desktop> right click> shortcut

2 / the new window in the text box to enter the SHUTDOWN -s -t 3600

3 / numbers in the second calculation Put your desired time.

4 / The Next> Finnish get out.

5 / The shutdown at the desktop as a shortcut to tairi.

6 / it by clicking once on the PC you will be stopped after 3600 seconds.

It is windows xp, vista, 7 will also work. When working on Windows 8 or yanina. I've used it in the developer preview version.

If you want to reboot the PC to enter the SHUTDOWN -r -t 3600. Newest
PC you do not have to worry.