Hi guys,

Recently, there is a headachy problem annoying me a lot. The operating system of my computer is windows 8 home premium. Every time when I try to shut down the computer, it will automatically reboot only several seconds after the screen displaying shut machine down. Besides, sometimes, when I boot the computer, there is also a automatic reboot after enter the Windows 8.

Can you show me what's the matter?

Thank you very much!