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Journeyman III

PC randomly freezes for sec then restarts

I have this pretty annoying issue since a month now. My pc just freezes for a short while then restarts itself. It happens randomly whatever I do browsing internet or playing games. I tried various things clean installing Windows, default bios settings, memtests but I'm kinda running out of things to try. Sometimes it runs fine for whole day but other time it restarts like once per hour.

I also spotted WHEA errors in Event Viewer appearing most of the time after restart: 2x Cache Hierarchy Error and 1x Bus/Interconnect Error.

My PC specs: 
CPU: AMD Ryzen 5 1600x
Motherboard: Asrock X370 Pro4 bios version P5.80
RAM: G.Skill Ripjaws DDR4 2x8GB
GPU: Gigabyte GTX 1070Ti 8GB
PSU: SilentiumPC Supremo M2 Gold 550W
Windows 10 64bit 21H2

Any help and ideas of what the issue may be here are welcome.

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