Windows 7: Chassis Fan Control

Hello, I bought a new rear case fan (CoolerMaster 120mm Blue Led), The problem that it is always running @ max RPM all the time, Can i control its speed? to make it 1000 RPM or less.. There's a screenshot of my BIOS (Gigabyte GA-MA770T-UD3P), Is there anyway to control this fan speed? Thank you in Advance.

Hi ...
If you have knowledge of electronics - or know someone who has - you can make use of a resistor. Otherwise, you can use SpeedFan, but since the fan is connected to the motherboard. Remember to use 3 to 4 pin adapter and plug it in where shown below. Hope it helps!

You could always manually drop your fans voltage to 7v or possibly even 5v. I'd expect in your case this would bugger up your LED display though.
Good article describing the methods at Hardware Secrets

Is there any other option below System Smart Fan Control?
Or if it is set to manual, off Auto, does another option show underneath that control.

On my Asus board there is Enable/Disable for CPU and system fans. Set to disable ther is not other options displayed. If set to Enable another box appears that has other options.
Those options are Standard/Turbo/Silent.

Or on you board if you highlight that Auto setting and hit the enter key what other option are available.

I'm afraid i don't have a very good knowledge of electronics so i got an adapter that came with the fan.. just like this pic
I'll try the SpeedFan software it may work.
Thank you

Thank you.

There's no other options about Fans except the ones in the screenshot i sent, Nothing happens if i select " Disabled " or " Enabled " on System Smart Fan Control,
In fact i suspect having any fan control on my BIOS maybe by software or another way.

I tried to lower the percentage to 50% but it is not working and lower fan speed from the config. and still not working(look at the pic).

They sell fan speed controllers and fans with speed control knobs.
Newegg.com - Fan speed control

Newegg.com - ZALMAN FAN MATE 2 Fan Controller

Ohh, It's good. Thank you