Memory channel stopped working

[der Knusprige]

A few weeks ago my pc crashed without any error messages.
The dispaly froze and the audio glitched out and produced horrible noise.
When i tried to boot the next day it wouldnt post. Something on the board makes three barely audible chirping
sounds and then i get a 5 beep error code before it just cuts power and tries to boot again. This error code
means CPU failure as far as i know.
After a day of trying different things i found out that my first memory channel just stopped accepting RAM
modules. Only if no module is in channel 1 the PC boots as normal.
Since then i have both modules seated in channel 2.
This isnt a huge problem most of times but sometimes the single channel setup is quite noticeable (some games
run much worse) and the overall performance seems slower at times.

I reseated the CPU and tested the RAM modules independantly and the seem to be ok.

I dont know which steps i could take next so i hope someone has an idea what i could try to fix this,
thanks in advance.


My setup:


16GB G.Skill Value DDR4-2133 DIMM CL15 Dual Kit
https://www.mindfactory.de/product_info.php/16GB-G-Skill-Value-DDR4-2133-DIMM-CL15-Dual-Kit_1013784.html


Gigabyte GA-Z170-HD3P Intel Z170 So.1151 Dual Channel DDR4 ATX Retail
https://www.mindfactory.de/product_info.php/Gigabyte-GA-Z170-HD3P-Intel-Z170-So-1151-Dual-Channel-DDR4-ATX-
Retail_1010542.html

Intel Core i5 6600K 4x 3.50GHz So.1151 WOF
https://www.mindfactory.de/product_info.php/Intel-Core-i5-6600K-4x-3-50GHz-So-1151-WOF_1010019.html

[Chiyawa]

14 hours ago, der Knusprige said:

I dont know which steps i could take next so i hope someone has an idea what i could try to fix this,
thanks in advance.
 

Well, I guess the only way (probably) is to change the CPU.

 

Other than that, inspect your motherboard for dust, dirt or foreign objects that might causes some components to short circuit, or change your motherboard altogether.

[der Knusprige]

Thank you for your reply, i already took to the MB with a compressor but that changed nothing.

I dont have another CPU with this socket handy. Buying replacements for the CPU or the MB is an option for me, but its the last option i want to take because i dont know what failed. If i order a CPU/Mainboard on amazon, can i return that if this doesnt solve the problem? Has anyone any experience with that?