M91p cpu fan

[twilighthowl]

Doesn't appear to be any option to change fanspeeds on the bios for the lenovo M91p. Fan is much louder then it should be and can't find documents from lenovo to check where the coy fan should be plugged in. Anyone have documentation specifics for this board with a breakdown of fan placements? Bios instructions for fan speeds? Another idea for how to fix the fan noise?

FYI, cpu temp is about 24c so it's not likely to be a temp issue.

 

[bailojustin]

IM pretty sure you cant alter the fan speed on the laptop fans, if its running loudly the fan itself might be going bad or its working hard to keep your laptop cool. You can open up your laptop find the fan connections and size, order a new one and pop it in if you want to replace the fan. While you do this you can also clean out the laptop. This will solve your noise issues.

 

[kwa-e]

Try using Speedfan, and check the fans and the case for any dust and clean if necessary.

 

[twilighthowl]

IM pretty sure you cant alter the fan speed on the laptop fans, if its running loudly the fan itself might be going bad or its working hard to keep your laptop cool. You can open up your laptop find the fan connections and size, order a new one and pop it in if you want to replace the fan. While you do this you can also clean out the laptop. This will solve your noise issues.

The Lenovo M91p is a SFF desktop, not a laptop.

 

[bailojustin]

Do you have the fans configured correctly and have the thermal sensor installed. I need to know how many connections each computer fan has, that will tell you werther or not its meant for a 3 pin with a tach or a 4 pin with pwm, that will automatically increase or decrease rpm based on computer conditions

Also an easy solution would be to get a fan controller to plug into your PSU avoiding the issue if it might me incorrect voltage on that specific rail, this way you can then power all your fans, 3 pins, with the fan controller and add some aesthetics to your case if your ready to DIY.