Desktop Operating Systems and Recovery

I have a Z2 Mini G9 that has been a great computer until this last week. The CPU fan has been acting very strange. I started hearing it more and more and now the pc has periods where it will run the CPU fan 100% at 4,000 RPM at random. 

Sometime it will run like this for one or two minutes, other times for ten or more mintues. It will stop for 30 seconds then come right back on full speed.  It seems to be more likely to do it after putting it to sleep for the night and waking it up the next day.  I did a hard shutdown and tried "reset" the pc  and it seemed to be fine for an afternoon. Next morning however when I woke it up it was back to acting randomly with the fan. 

I used the HP Performance Advisor and it is not showing the CPU overheating, 39C currently. I watch the task manger and the CPU is never loaded up and heavily working however the fan will be running full speed. It does seem like some piece of soaftware could be spiking the CPU up quickly causing the fan to trigger. I am not sure becasue I am not seeing this type of behavior in the task manger. 

Made sure BIOS was updated, passed a fan speed test. Open the computer and blew it out, it still looked brand new inside, no dirt or dust. 

Anybody have any ideas as to why it just started randomly doing this the last few days? Been using the PC daily since bought brand new 6 months ago.

Here are some specs. 

Mainboard

SMBIOS Version: 3.4

BIOS Vendor: HP
BIOS Version: U50 Ver. 01.03.00

System Manufacturer: HP
System Name: HP Z2 Mini G9 Workstation Desktop PC
System Version:

Mainboard Manufacturer: HP
Mainboard Name: 895E
Mainboard Version: KBC Version 11.91.00

Processor Manufacturer: Intel(R) Corporation
Processor Version: 12th Gen Intel(R) Core(TM) i7-12700K
Processor Core Count: 12
Processor Core Enabled: 12
Processor Thread Count: 20
Processor External Clock: 100 Mhz