Fans are all or nothing...

[Conan]

Hello, recently my computer fans (desktop) started acting weirdly. They hover on 1000 rpm most of the times but randomly jumps up to about 4500 rpm for a brief moment.
Screenshot:
http://prntscr.com/7yogbt

This happens for no reason I recorded...Cpu and gpu temp stays the same cpu usage is around 20% .

for that brief moment they are super noisy...Can i fix this? How? Thank you.

[Geek-9pm]

You may have a component failure.
It is hard to guess without the specs for your computer.
It is a Brand Name desktop?  Did you build it?
Run a program that identifies what your have.
CPU-Z is freeware that tells a lot.

CPU-Z is a freeware that gathers information on some of the main devices of your system :
    Processor name and number, codename, process, package, cache levels.
    Mainboard and chipset.
    Memory type, size, timings, and module specifications (SPD).
    Real time measurement of each core's internal frequency, memory frequency.

http://www.cpuid.com/softwares/cpu-z.html
In your next post give the model of the motherboard.