I am sure you might have experienced this at some point, you are working on something important in the middle of the night and your laptop suddenly decides to be more noisy than a jet plane about to take off. And if you are one of those poor souls whose laptops have shoddy ventilation for the fans, you would have often witnessed your laptops transforming into hot ovens.
Rejoice, as those times are over. We will show you a clean yet effective way to fix the issue once for all. No, I am not going to tell you to dismantle your laptop and clean all the dust. The trick lies within Windows. I bet you will be surprised to know more about it.
Meet Windows’ Cooling Tech
This is a standard cooling technique employed in Windows (or even Linux). The fans run, to cool the processor whenever necessary. Active cooling is very suitable when you intend to use your laptop for high performance apps without being much bothered about the heat dissipation.
Active Cooling might be more straightforward to implement, but has several potential drawbacks. The power required to run an active cooling device might reduce the battery life. The fan noise might be undesirable and annoying when using some applications; say like recording audio with the inbuilt mic or when you are working in a quiet place.
Now this is the cooling technique which will do the trick. Passive cooling technique involves Windows throttling one or more devices to reduce the heat generated by these devices. Throttling might involve reducing the frequency of the clock that drives a device, lowering the voltage supplied to the device, or turning off a part of the device.
Now Passive cooling might decrease the performance of a PC a bit but has some awesome benefits. Firstly, the noise generated by the fans will be dramatically less, and so will be the heat generated by the laptop. Secondly, the battery life will also directly increase thanks to decreased fan usage.
Modern processors will not have any noticeable slow downs if you use passive cooling, unless they are very intensive applications.
So our simple solution : Turn Passive Cooling On!
For passive cooling to work smoothly without having noticeable performance decrease, the laptop vendor should fully support ACPI implementation. Else you will encounter dramatic system slowdowns when you enable passive cooling. It is good to experiment a wee bit before you settle down with passive cooling.
- Click on the battery icon on the taskbar. Select More power options
- Now on the active plan settings select change plan settings.
- Select change advanced power settings in the “Edit Plan Settings” window.
- You will now be pretty surprised to see the actual granular controls Windows offers to tweak the power. Have fun experimenting with them. For now, go to Processor power management sub menu. Now select System Cooling Policy under it. Change it from Active to Passive over Plugged In and On Battery.
That’s it. Your laptop fans should slow down in a while and will never sound again like a jet-plane that’s about to take off.
Passive cooling works wonders on laptops that support them. Just make sure the current ACPI driver works well with passive cooling. In case not, you will have to update your drivers from your laptop manufacturer site. If you get passive cooling working, the difference can be quite noticeable. Here are the before and after images of passive cooling on my HP-G42 478TX notebook computer.
Before Passive Cooling
After Passive Cooling
Passive cooling must definitely help cooling down your laptop and even desktops. This is something you should try before cracking open your machine. Let us know about your results in the comments below.