Fans Running Too Fast And Loud

oseza21

Junior Member
Oct 14, 2017
1
0
66
When I launched my stationary PC this morning, there were some books on the keyboard so it started beeping, i don't know which buttons the books were on and my fans started running so fast and extremely loud.
My pc have 3 fans, 2 of them are running on 3XXX RPM and the other one on 5XXX RPM (https://image.ibb.co/jYAjYw/fan.png), I tried to slow them by using speedfan but it didn't work.

Anyone knows what's wrong?

Thanks!