PC reboots without BSOD, seemingly Firefox is a culprit
Build: Windows 10 Pro, Intel Core i5-10600, GTX 1070, 16GB RAM, MSI B460M-A Pro. OS and some software on an SSD, other stuff on two hard drives.
Problem: Replaced mobo, CPU, RAM, CPU fan and SSD a week ago, installed fresh OS. The day after that computer started resetting randomly while streaming or watching a video in Firefox after a period of from five minutes to two hours. Never happened while I was playing Monster Hunter World and Apex Legends and streaming them with Chrome open or closed. Win doesn't say anything about it after reboot, and I can't see a minidump in Windows folder.
Event log doesn't say much interesting, two events right after the reboot are always like that:
The previous system shutdown at 15:23:32 on 02.03.2021 was unexpected.
Audit events have been dropped by the transport. 0
The only other warnings in the log are like this: Catalog Database (1800,R,98) Catalog Database: The database format feature version 9180 (0x23dc) could not be used due to the current database format 1568.20.0, controlled by the parameter 0x410022D8 (8920 | JET_efvAllowHigherPersistedFormat).
Tried updating chipset & network adapter driver, graphics drivers, turning hardware acceleration in browsers on and off, removing add-ons from Firefox, reinstalling browsers. Checking temperatures with Open Hardware Monitor (all below 40 degrees Celsius), CPU load is very low. PSU is also a suspect, but this crash never happened when Firefox wasn't running.