Might want to check all cpu cores in afterburner and see what the load is across all cores. Should have 6 threads plus cpu's total usage.
Should look like
cpu1 usage
cpu2 usage
cpu3 usage
on to cpu6 usage
then cpu (without a number) is combined usage.
Make sure all are checked.
I'm not sure why there are two % readouts of gpu though.
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Being HP, wouldn't be surprised there's a lot of bloat ware installed. Think about reinstalling Win10 to get rid of that crap. There's a tutorial in the Win10 thread if want to check it out. It's easy to do, just create a usb Win 10 installer and off you go.
Fair enough if you're not confident building your own system or have the time but I do dislike oem builds, the bloatware, cheap components and proprietary configurations annoys me. That's not your fault.