New Build CPU won't boot, everything shuts down after 1-2 seconds

stan.muravyev

Prominent
Nov 26, 2017
2
0
510
First time builder here,

A brand new build, carefully assembled, with everything connected, starts for 1-2 seconds, CPU LED flashes once and it shuts down.
Tried reassembling multiple times, breadboxing, different RAM slots, no GPU etc., always the same outcome.
I have already exchanged the MOBO, PSU and the CPU, same outcome nothing changes. Checked for component compatability - no problem either.
Hooked up the build to a friend's PSU, same thing.

Current build:
MOBO: ASUS ROG STRIX Z370-F GAMING (LGA 1151, Intel Z370, ATX)
RAM: HyperX Fury (2x, 8GB, DDR4-2400, DIMM 288)
CPU: Intel Core i7 7700k BOX (LGA 1151, 4.20GHz, Unlocked)
CPU Fan: be quiet! Pure Rock (15.50c,)
PSU: Corsair RM850x (850W)
GPU: ASUS GeForce GTX 1080 Ti STRIX 11g-GAMING (11GB, High End)
HDD: WD Black (2000GB, 3.5")
SSD: Samsung 850 EVO Basic (250GB, 2.5")

I have already looked through the step by step "Won't boot, No POST" thread, nothing helped
Really can't figure out what's wrong, any help will be appreciated

 

stan.muravyev

Prominent
Nov 26, 2017
2
0
510


Thank you for your answer! I must have overlooked that, rookie mistake
Would Intel Core i3-8350K (LGA 1151, 4GHz, Unlocked) work?