GigaByte GA-Z170XP-SLI No POST when GTX 970 SLI

mathero11

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Feb 4, 2016
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4,510
This it the motherboard page: http://www.gigabyte.com/products/product-page.aspx?pid=5496#ov

What the problem is: when im using a single GTX 970 (asus strix) it just beeps and post. But now, the time when I put my other GTX 970 (SLI) in, my motherboard sometimes POST when it get turned on. So sometimes I can't hear anything, fans are spinning etc. but other times it just beeps and boot to windows. I don't have any problems while im in windows, only that it can't put into sleep mode because it just immdediatly goes from sleep to on in 2 sec.
Now it came to the time that my pc won't even boot up with the 2 graphic cards in it. So i removed them both and now im on the integrated graphics. And it just POST every time I turn the PC on.

Somebody know any solution? bad bios settings?(i flashed to the lateast version)
My power is 750W Coolermaster, swapped the 2x8GB kingston ddr4 memory in different slots and as cpu intel i7-6700k.
 

mathero11

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Feb 4, 2016
11
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4,510
yes I think that is the problem. I've ordered a evga g2 750w psu and it comes tuesday, i'll let u know if it was the power supply

 

mathero11

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Feb 4, 2016
11
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4,510

it was the psu. my previous was the CM 750M
Now i've got the EVGA G2 750W and now it does boot every time :)
thanks