Computer randomly tuing off

I just got a Msi 4gb Gtx 960 and now my computer randomly reboots My computer has EVGA 100-W1-500-KR 500W ATX12V / EPS12V 80 PLUS Certified Active PFC Continuous Power Supply

Msi h110m gaming motherboard

G.SKILL Ripjaws 4 Series 16GB (2 x 8GB) 288-Pin DDR4 SDRAM DDR4 2133 (PC4 17000) Memory Kit Model

Intel Core i5-6500 6M Skylake Quad-Core 3.2 GHz LGA 1151 65W BX80662I56500 Desktop Processor

A 72000 wd 1tb hard drive

DEEPCOOL Gamer Storm CAPTAIN 120 CPU Liquid Cooler AIO Water Cooling Ceramic Bearing Pump Visual Liquid Flow with 120mm FDB PWM Fan Rubber Coating Deep Silent Support LGA 2011-v3

And the graphics card

Why is it powering off

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