Newly built PC wont fully start up

[Infernius]

Newly built PC turns on for 5-7 seconds, fans start spinning, then it shuts off for 1 second before starting up again and repeating cycle until psu is turned off.

PC Specs

Intel Core i5-6600K 3.5GHz Quad-Core Processor

CRYORIG H7 49.0 CFM CPU Cooler

Gigabyte GA-Z170XP-SLI ATX LGA1151 Motherboard

G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-2133 Memory

Samsung 850 EVO-Series 250GB 2.5" Solid State Drive

Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive

Sapphire Radeon R9 390 8GB Nitro Video Card

NZXT S340 (Black) ATX Mid Tower Case

EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply

 

[badboyrog2]

try to disconnect the cpu power connector and try to start again and see if the recycle problem persist
if not ..your mobo can be faulty or cpu

 

[Infernius]

try to disconnect the cpu power connector and try to start again and see if the recycle problem persist
if not ..your mobo can be faulty or cpu

Problem persists

 

[Vic 40]

Just rebuild,double check every connection.It's an old sticky,but look at it for reference,
http://www.tomshardware.co.uk/forum/261145-31-perform-steps-posting-post-boot-video-problems

 

[badboyrog2]

``Problem persists ``
look weird but its a good news

so maybe a short somewhere ... did you install the standoff correcly and at the good place??
did you install the cpu correctly or bent pins and thermal paste well applied ??
did you tried with only one ram at the time?
your psu worked well???

 

[Infernius]

``Problem persists ``
look weird but its a good news

so maybe a short somewhere ... did you install the standoff correcly and at the good place??
did you install the cpu correctly or bent pins and thermal paste well applied ??
did you tried with only one ram at the time?
your psu worked well???

Reinstalled standoffs and am pretty sure they're all in place. thermal paste well applied, tried with one ram, PSU apears to be working but it may not be providing enoguh power, i don't really know.

 

[joshbgosh10592]

Kinda sounds like the BIOS is freaking out. Are you able to do anything, maybe boot into the BIOS to monitor?
If not, usually the CPU overheating would just cause it to power off, and not cycle.. Have you tried only CPU, 1 stick of RAM (multiple slots), and onboard graphics only? Disconnect drives and graphics card.