i think cpu is making a whine noise

[jaekim24]

how do you get rid of the whine noise?

[c0dev0id]

Change the fan.

[jaekim24]

i've stopped the fan and the whine is still there. that led me to believe it's the cpu. i've seen online about changing the cpu sleep state or something in the bios but i don't know how to do it. also i can't get into my bios.

[c0dev0id]

Other than the fan, I had whining power supplies and also whining screens (which also falls into the category power supply/power converter, but a little one for the display backlight).

Does it change frequency based on the display brightness or even turns off when the display is off? (display closed)

[jaekim24]

No the freq doesnt change when i increase or decrease the brightness of the monitor. I saw on a form
Go into the BIOS and turn off the power saving processor feature that puts it into idle mode. This should be somewhere under Config/Power - look for "CPU Power Management", the default being automatic. Set "CPU Power Management" to "Disabled" (This worked on a ThinkPad [T21](https://www.thinkwiki.org/wiki/Category:T21), [T43](https://www.thinkwiki.org/wiki/Category:T43), [T60](https://www.thinkwiki.org/wiki/Category:T60), [X60s](https://www.thinkwiki.org/wiki/Category:X60s), [X200s](https://www.thinkwiki.org/wiki/Category:X200s) and [Z61m](https://www.thinkwiki.org/wiki/Category:Z61m)). However, this also affects power consumption when the CPU is idle, it's similar to disabling the C4/C3 ACPI CPU power state. For example, on a Z61m 9450-3HG, a full charged battery with power management enabled in the BIOS provides the notebook with power for about 3.5h, if disabled, the battery-lifetime is only about 2h.
But I cant find that in the bios.