The motherboard is set to make sure that your cpu fan doesn't stop to protect it.
You can disable this in bios under hardware monitoring or something like that. There will be a line where you can change the fan speed at which you get a warning, just turn it off "disabled". That will get rid of your error.
If you tell us what your motherboard is we can probably help you even more...
P.S. Just as a general rule you should always post all your specs, I'm sure you've seen others do this, more information is better than none.
P.S.S. Don't ever call any component a "thingy".
