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  1. #1
    ROG Junior Member Array
    Join Date
    Aug 2015
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    Z270F fans start briefly, then off, then fully turn on normal behavior?

    I have a Z270F and the RAM slots B1 and B2 don't work at all, it won't boot with RAM in either of those slots, it just stops with the motherboard LEDs stuck on yellow (the board will be RMA'd this week).

    But the other issue I've never seen before is when it's first turned on, all of the fans glow and start spinning for a second or two, then shut off, then everything fully turns on again and stays on. Is that brief on/offon again normal behavior or is there something else wrong besides just the 2 dead RAM slots?

    The CPU is i7-7700K, Cooler Master Hyper 612, power supply EVGA SuperNOVA 750G3 Gold. RAM is Corsair CMK32GX4M2B3000C15 (Asus said my problem with the RAM slots was the old RAM, G.Skill Ripjaw F4-2400C15D-32GVR 16GBx2, wasn't on their approved list so said I had to first try other RAM, but problem is still unchanged with the new Corsair RAM, both B slots are dead). Nothing else is plugged in at this point.

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