Problem with ASUS Z87-C and i5 4690K

[jbrianj]

We tried installing this CPU on the Z87-C. It does not work the CPU light flashes.

What we did:

1) Install the CPU turn it on with a red flashing CPU_LED on the motherboard
2) We figured we needed to update the bios for Devil's Canyon CPU's...(We used EZ Flash 2 utilty)
3) We updated the BIOS to the latest using my own i5 4670K which DOES work on this Mobo(So it's not a motherboard issue!).
4) Still not working after BIOS update
now here's the really odd part:
5) We have another motherboard with a faulty network controller(A Gigabyte Z97 Gaming 3, hence why we tried using this mobo) where the CPU STILL WORKS ON! So it's not the CPU EITHER!.

RAM works we tested it we even tried different RAM, PSU works everything works on this Mobo.

We also confirmed the CPU still working...
Even the Support site says that this CPU is supported with latest BIOS which we properly installed(I'm 100% sure)

With all these steps we've also tried resetting CMOS multiple times

Now what am i supposed to do?! My mind is blown with this because every part works on its own, but this particular CPU does for some reason not working with this particular motherboard even though the support site says that it should!

Specs:

ASUS Z87-C(Replacement for the Gigabyte Z97 Gaming 3)
i5 4690K
8GB Crucial Tactical 8GB DDR3 1600Mhz 1.35V(We also tried some older G.skill ripjaws 1.5V DDR3 1600Mhz)
Samsung 850 EVO 120GB
1TB HDD

 

[Tradesman1]

Might want to bench it to troubleshoot and eliminate chance of shorting the mobo on the case:

http://www.tomshardware.com/faq/id-1753671/bench-troubleshooting.html

 

[jbrianj]

I have no idea why that would be the case, we tried another CPU on it and it works perfectly fine, it is not the motherboard...

 

[junkeymonkey]

what does that footnote mean at asus on your board that must mean something is not the same as normal flashing as with the rest off the chips ???

only the refresh chips have it ???


''1.Before using the new Intel 4th Gen Core processors, we suggest that you first download the BIOS updater for new Intel 4th Gen Core Processors and then update the BIOS using this tool. 2.Due to iGPU limitation, 4K UHD display is not supported''

I guess you look into that or just flashed as normally you would ???

under downloads - bios utility

BIOS updater for New 4th Gen Intel Core Processors
Before using the new Intel 4th Gen Core processors, we suggest that you first download the BIOS updater for new Intel 4th Gen Core Processors and then update the BIOS using this tool.

 

[jbrianj]

Me and my friend decided to trade CPU as my motherboard (Gigabyte z87-HD3) DOES work with the refresh(devil's canyon) with the proper bios update. It was just becoming way too much work.

I do know a few things that might've caused it.

1) There was a really really tiny bit of non-conductive cooling paste on 1 of the contacts on the CPU that might've blocked contact on 1 of the pins of the motherboard CPU socket
2) @junkeymonkey You mean I HAD(!!) to use the Windows tool and NOT EZ Flash 2? This might've been another reason.
3) The motherboard might just not have been compatible even though it said so...

Anyway since we switched CPU's permanently(They're both pretty much the same other than stock frequency and thermal systems) and both got a working PC now the issue is "resolved". Basically this means we'll never know what the reason was and I really am not in the mood anymore to find out

 

[junkeymonkey]

don't know just thought It was funny they pointed oput to use there flashing tool for refresh chips - maybe something to that ??

thermal paste can be and for the most part can be conductive so it could cause a short ?? you may read the spcs on what you used - some carbon based

but even claimed as non conductive there still this said '' the compound is very slightly capacitive and could potentially cause problems if it bridges two close-proximity electrical paths.)''

just best to be careful on how you slop it around regardless ??

http://www.arcticsilver.com/as5.htm

[I had this slip up once myself and got it into something where it was not needed ] oops ...