CPU Fan or System Cooling Policy issue in Windows 10?

[mr_yellow]

Hey Guys,

I've been playing around with windows 10 on my x61s for a few weeks now and am pretty happy but I've been trying to diagnose a performance issue that I've finally been able to flesh out.

Essentially, when ever I've been playing some high bitrate videos, I noticed the CPU throttles down to .77 ghz and caps the cpu utilization to 50%. The CPU Fan on the other hand never changes speed.

I thought at first the system thought I was on battery mode and I had set the throttling settings too aggressively.

I played around with the power profile settings and realized no matter what I set it to (system cooling policy was set to active), the CPU fan would never ramp up with high CPU usage and that would cause the chip to self-throttle. the temp on the CPU was 70-75-80 degrees.

I suspect there's some dust in there too that I will try to get rid of but I know the fan CAN go faster and louder (which it does at every boot during POST), but windows 10 refuses to crank it.

Anyone else here have issues with the CPU fan not ramping up with the temperature? I've tried Speedfan but it doesn't detect any fan to control and I've tried going into the bios (installed middleton bios) to set the cooling policy to max performance (no difference). I found the latest Lenovo PM Driver too and have that installed but still no difference.

Hopefully someone here has a solution for this.

Thanks!

[mr_yellow]

Sooo.. I found out about tpfancontrol...

great tool and i was able to crank the CPU fan to it's max (set to manual value to 255)... Fan spinning at 7800 RPM, lots of noise...

but even with CPU utilization <25%, the CPU Temp remains at 65 degrees C. crazy... I guess I should open up the system, do some dust cleaning and maybe remount the heatsink. this is nuts.