[SOLVED] Could my CPU be broken ?

[|Onka|]

Hi!

Ive posted a few times now about my pc not booting with dual channel, only on slots 3 and 4. I RMAd my motherboard thinking its motherboard issue and they contacted me back saying theres one pin bent and transistor burnt above dimm slots. I was relieved, knowing that the issue was on motherboard, i thought. I bought new motherboard from someone on the internet and picked it up f2f. Checked as well as i could with bare eyes, no bent pins and everything seemed well.

I came home and built my pc back. Now with the new motherboard, i am getting the exact same issue. Every component is the same except motherboard. I have 4 ram sticks and every single one of them works on slots 3 and 4. My sticks were bought in same package. Could it be cpu issue ? If so is it something i could get a new one from warranty or users fault.

For the record, everything worked fine for a year or so, only until last year when i changed my fluids from cooling system. I took off my cpu and rams back then, and cleaned cpu and installed back on. Ive been just using 2 ram sticks for better part of an year on single channel until now. Only until last week i started to take action and RMAd motherboard.

Full pc specs:

MB: MSI M6 AC (old one was asus maximus IX hero)
CPU: i7-7700K
RAM: G.Skill TridentZ 3466mhz CL16 4x8gb
GPU: Asus geforce gtx 1080 strix A OC
PSU: EVGA supernova G2 750W
SSD: M.2 samsung 960 EVO 250gb as my windows drive
I also have toshiba 250gb and couple HDDs but thats probably irrelevant(?)

 

[rocktalkrock]

Is your motherboard updated to the latest BIOS? Many updates list "Improve memory compatibility".
Have you tried booting all 4 sticks with the memory set to 2400 MHz?
What do the Onboard LEDs of you motherboard show when you boot with all 4 sticks of RAM? Your motherboard has 4 EZ Debug LEDs, 4 DIMM LEDs and a Debug Code LED located at the bottom of the board.

 

[|Onka|]

Is your motherboard updated to the latest BIOS? Many updates list "Improve memory compatibility".
Have you tried booting all 4 sticks with the memory set to 2400 MHz?
What do the Onboard LEDs of you motherboard show when you boot with all 4 sticks of RAM? Your motherboard has 4 EZ Debug LEDs, 4 DIMM LEDs and a Debug Code LED located at the bottom of the board.

Yeah so my debug leds flashed CPU and RAM repeatedly as did my last motherboard too. But I should have probably updated this since i found out the problem. I had my cpu blocks backpanel too tight wich was doing somesort of interruption for my other channel i suppose. So for anyone with the same issue it is most likely either too tight cpu cooler OR the backpanel thats behind motherboard.

I figured this after i borrowed my friends intel stock cooler that doesnt require backpanel and it worked fine. After that i checked my cpu block manual and apparently i was supposed to rip off middle part of the plastic cover and i hadnt so it was pushing in too much. My block is for 115x or 775 socket and only in 775 is it supposed to keep the plastic cover.

Sorry for wasting your time on this one 😀 Shame on me since i bought new motherboard already used so i cant return it 😀