WHEA Logger entries 8700K

Today i checked my event viewer and found some weird errors from 21.01.2018 :

A spam of:
WHEA Event ID 19 CPU-corrected hw error

And only one :
WHEA Event ID 47 memory-corrected hw error

Here are screen with one of them:

This day i remember i finished installing Windows 10. And system was completely on idle overnight.

Errors was only in 21 january. From 22 january till today no errors in event viewer,i checking now all days.

This happened in day when i finished installing Windows 10.

Errors starts showing on IDLE in event logs in 3 a.m and finished at 3 at noon. After that errors stops showing.

I triied memtest86,ihcmemtet all benchmarks and no errors. No bsods,no freezing.

Any ideas why that happened? That was error related to hardware or ?

And i dont know why this errors happened in this day?

Computer is:
8700K stock, MTE on, 4700mhz auto clock
Asus Z370 Pro Gaming
16GB DDR 3000MHZ ( XMP ON)
Gtx 1080 Ti Aorus
Corsair 750 Rmi
SSD Crucial 525GB
Windows 10 clean install 1709 Creator Fall Update

All settings in UEFI are stock,defaulted . Only XMP profile is on.

Temps of cpu fine,temps of gpu fine. Never had any single BSOD. Memtest86 and ihcmemtest no errors. All benchmarks passing, no crashing in games

Only saw that error in event viewer which make think that is still with cpu or rams or mobo or psu?

Looking across internet i have found bad opinions about this. I am so depressed guys!