How we can shutdown my Windows 7 PC after some amount of time automatically?

Question

Is there whatsapp for pc, if yes then can someone suggest me from where I can download.

Answer 1

In windows 8 or window 10 use ctrl+x than select control panel(admin),after control panel opens write down the following command:
shutdown /s /t xx here xx is time in seconds
for example: shutdown /s /t 10 this will shutdown your system after 10 seconds automatically