Kernel 41 crashes and wrong RAM speed

[Lare111]

I had a Kernel 41 crash shortly after starting The Witcher 3. At first I increased CPU voltage from 1.3 to 1.31 but after 20 minutes of gaming my PC crashed again during very light cutscene! I thought my CPU was 100% stable with 1.3V and 4.9Ghz since I ran AIDA64 FPU and Realbench overnight to test stability. How isn't it stable anymore even thought I added more voltage? Earlier this week I played The Witcher 3 for hours without any problems.

 

Also my DDR4 ram is stuck at 1866Mhz currently. I tried enabling XMP which didn't help and only way to reach 2800Mhz again is to select 3200Mhz preset in bios. Basically 2133Mhz RAM speed in bios = 1866Mhz and 3200Mhz = 2800Mhz. Why does this happen? I tried reseting bios multiple times but that didn't do anything. 

 

After those Kernel crashes Windows 10 started to repair itself. Is it normal?

[mockedarche]

Assuming you know the typical stuff but is your bio up to date? Is windows 10 up to date? is your gpu driver up to date? Kernel crash meaning BSOD? if so what code did it give?Stabilty is stuff like prime 95 and AIDA64 is a good start but doesn't represent real world. I have stressed 4 hours with prime 95 added more voltage to make sure and still froze randomly while surfing the web.

[Lare111]

I'm actually just updating the bios. I found a newer version which according to Gigabyte improves DDR4 stability. Hope this fixes RAM speed problems. WIndows 10 is updated.

 

My screen just froze during cutscene and sound started buzzing. According to event viewer it was a Kernel 41 power error. I'll try tweaking clock speeds and voltages but first I'm trying to fix the RAM speed.

 

 

[Lare111]

Just updated bios and RAM is still running at 1866Mhz...

[airdeano]

your observing 1866 in where? the UEFI or CPU-Z? https://www.cpuid.com/downloads/cpu-z/cpu-z_1.87-en.exe

[Lare111]

29 minutes ago, airdeano said:

your observing 1866 in where? the UEFI or CPU-Z? https://www.cpuid.com/downloads/cpu-z/cpu-z_1.87-en.exe

Both UEFI and CPU-Z.

 

I tried using my PC with only one RAM stick. I tried both sticks separately and every slots and conclusion =

 

If I use only one RAM stick, RAM speed is normal 2133Mhz. However if I use both sticks and dual channel, RAM speed drops to 1866Mhz and overclocking is difficult since motherboard says wrong numbers.

 

Is my motherboard broken?