Hi Andrew,
My name is Igor, it's a pleasure for me to help others and I'll do all my best to help you.
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...