System reboots after clicking on shutdown

[Oblivion2500]

My computer reboots every single time I shut down the computer. I do not know what the cause of this problem is. It just started happening last week. I wish I can give you more information, but I check event logger and noticed an critical error in the log about the time when I shut down the computer.

My System Specs:
Intel Core i7 4770K (No overclocking)
Corsair H100i Liquid Cooler
Asus Maximus VI Hero Motherboard (BIOS Version: 0711)
EVGA Nvidia GTX 770 2GB SuperClocked
G.Skill Ripjaw X 16GB Memory/RAM
WD Cavair Black 2TB HDD
Kingston HyperX 3K 128 SSD

 

[ascomputers]

have you completed any updates prior to this happening?

maybe try running a system restore?
http://www.sevenforums.com/tutorials/668-system-recovery-options.html