Official GIGABYTE Forum

GA-P55A-UD3P resets itself once on loading operating system screen

Hi, this my firts post and i have a problem. When I turn on my computer a screen appears with the words "loading operating system" and then the computer restarts itself and after that start the system loaded smoothly.

Excuse me my english is pretty rusty
GA-P55A-UD3P
Core i7 860
6GB G. Skill 1600 mhz
SSD 512 Samsung 840 Pr,  WD 1TB,
Nvidia Geforce 660 Ti
PSU 850