Question Gigabyte z170mx gaming 5

Feb 23, 2020
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I just got a Gigabyte z170mx gming 5,it turns on for a few seconds and off for a second and on again, repeating the same thing,no display.
Psu is Corsair Vs550 and working,Cpu is a G4400 and an 8 gig Ram.I connected nothing else only thosr stated.
Wat could b the problem for on and off repeat?
Thanks.
 

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