/ Sign-up
Your question

CPU fan constantly running at high speeds

  • CPUs
  • Fan
Last response: in CPUs
June 7, 2011 3:11:54 PM

hey everyone,

I just built my first PC and am experiencing a problem with the stock fan of my processor (AMD Phenom II X4 955).

basically it runs at an obnoxiously high speed, no matter what I am doing. often times the fan is so loud that i can't even hear music over it and stuff like that.

i installed SpeedFan and checked my fan's settings... when I am doing NOTHING but checking my email or staring at a blank desktop the CPU's temp will be around 39C - 42C and the CPU fan will be going at a crazy speed of 5000+ RPM! Last night the fan was even in the high 6000's.

What I've tried so far:

- I tried making sure the heatsink was connected to the right thing on the motherboard (it seems fine)
- I removed the fan and applied more thermal paste to the CPU. this didn't really do anything.
- I went into the BIOS for my motherboard (asrock m3a770de) and checked to see if Cool'n'Quiet mode was enabled. It was.

My last ditch effort is to go buy a new heatsink but other than that I have no idea what to do. How can I stop this heatsink from running at constant ridiculous speeds?

Thanks for any help!

More about : cpu fan constantly running high speeds

a c 137 à CPUs
June 7, 2011 3:55:51 PM

If C'n'Q is on, have you enabled cpu fan control in bios.

For C'n'Q to work effectively in W7, you must use balanced or energy save power profiles, if you want to have a custom profile, just make a change to one of them you can always set them back to default later.
a b à CPUs
June 7, 2011 4:58:50 PM

Yeah, fine temperatures but wrong fan control.