Many times, booting to the BIOS offers some power checking tools .. not inside W10, but rather before you ever boot to the OS.
Requires a reboot and knowledge of shortcuts keys during the boot.
Large fluctuations here (especially any that dip below the recommended specs) can be a sign.

Working in the BIOS ain't for everyone, but it's another option/tool.


Make your sound your own!
.. I do not work here, but the benefits are still awesome