Question High CPU usage on a new build ?

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is it just me or is it kind of stupid theres msi pro z790-a wifi and a msi pro z790-a wifi ddr4 .. two completely different boards...

I had a hard time downloading the right bios drivers because of this.....

Made me think I had the normal z790-a but i guess i got the cheap one >.>
 
an alarm on my norton was just triggered - high cpu usage 86%+ on at least one cpu core

is this anything I should worry about..... it seems to be running pretty good these days

I just installed another 1 tb m.2 ssd