Please try to uninstall Malwarebytes and possibly other third-party antivirus software.
Did you run Memtest Free or Memtest Pro? Free version skips some tests unfortunately.
Kernel-Power 41 (63) error mostly means the problem with power supplying. Can you replace power supply unit for checking? It may mean problems with power management in BIOS or motherboard too.
And you may try to turn off all CPU power saving modes in BIOS (different C states) to check if the problem is in motherboard.
See some details at https://docs.microsoft.com/en-us/windows/client...
Volmgr 161 event (cannot create dump file) is the result of unexpectable power ;loss.