CPU Fan Randomly Speeding up all of a sudden?

[jCrazy]

Hello, I recently discovered an issue with a fan in my computer, I'm using the default fans, regular case fans and stock Intel fan (haven't upgraded any sadly).
So the problem started when I heard an odd noise from my PC so I powered it off and opened it up to see the issue. In the process of opening it I unplugged a fan. I plugged everything back in and got it back to normal (or atleast I thought) and booted it back up.
And the problem started when I booted it up and noticed one of the fans kept speeding up randomly.

I was wondering if there was any fix for this or if it's even a problem? The computer is less than a year old.

Thanks in advance!

EDIT: It is my CPU fan, but I still do not know why it does this.

 

[GhislainG]

If it's the CPU fan, then it may be normal if utilization increases when that happens and additional cooling is required.

 

[jCrazy]

If it's the CPU fan, then it may be normal if utilization increases when that happens and additional cooling is required.

I have now found out that it is my CPU fan, but why is it doing this?
Thank you for the reply, but I notice it most on startup and it comes and goes at completely random intervals. And I haven't even been stressing my processor at all when this happens. I could be simply looking at my desktop and it will whirr up. And this is noticably louder than what it used to be. What can I do to fix this?

 

[GhislainG]

Background tasks run at startup and randomly. Could you install Intel XTU and check how busy and hot the CPU is when this happens?

 

[jCrazy]

Background tasks run at startup and randomly. Could you install Intel XTU and check how busy and hot the CPU is when this happens?

I installed Intel XTU and the package temperature as I'm writing this is 32 C.

 

[GhislainG]

I presume the fan isn't running at full speed? Let XTU run in the background and check how busy the CPU was when the fan increased in speed. You can also see if the CPU was warmer, etc.

 

[jCrazy]

I presume the fan isn't running at full speed? Let XTU run in the background and check how busy the CPU was when the fan increased in speed. You can also see if the CPU was warmer, etc.

I checked the bios and on startup the RPM of the CPU fan was around 1300. But I will definitely let it run to check things out.