PC restart with red led on mainboard about GPU error, GPU fans max speed

Jun 10, 2018
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[video="https://www.youtube.com/watch?v=7GisG8ye_kY&feature=youtu.be"][/video]

I have GTX 780 Asus VGA, after used only chrome and facebook, my PC restart and hang on start, screen black, led on main board was red on VGA error.
The VGA was not hot.
What is this error, what can I do now? Please help, that VGA is quite expensive. Thank you very much.
P/S, my computer is:
# psu seasonic s12-520w
# LCD SamSung 21.5 inch
# Main: MSI B150M Mortar LGA 1151
# VGA: GTX780TI-DC2OC-3GD5
# 2x4G Ram ddr4 and 1x8G ram ddr4
# 1 fans 60mm and 1 fans 80mm
# CPU i5 6500

 
Jun 10, 2018
2
0
10


It's occured ramdom, so I can't test in other PC. When I play game it not occured, but when I used normal like chrome It was occured.
I'm asking myself maybe the PSU is lower power for working normal?