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If your CPU system overheats, you must raise the fan speed to decrease the temperature of the CPU. However, there are also other reasons than overheating that you have to manage the fan’s speed. If the fan runs at maximum speed for no reason, you may need to decrease the rate. Applying the BIOS to control the CPU fan speed is effective, but sometimes you may not manage the fan speed with BIOS. So for that, here are two methods to work the CPU fan speed without BIOS.
Changing CPU Fan Speed applying Speed Fan
- There are many good fan managing software is available on the web. But Speed Fan is arguably the most effective of them. You can manage the CPU fan speed here manually and automatically.
- First, download the software from here – Download Speed Fan. Set it up on your PC.
- Open the application. It will immediately scan the system.
- In the “Readings” section, locate the “Configure” option and select it.
- If you do not wish to configure and let the software work independently, you can select the “Automatic fan speed” option. However, sometimes it does not work effectively, so it is better to configure the fan speed.
- After accessing the “Configure” window, select the “Advanced” tab. Then, open the dropdown options of “Chip.”
- Locate your system’s Pulse-width Modulations, aka PWMs. See all the options here if you do not know the location of the PWMs.
- After finding the PWM, pick the one you wish to manage. A “Set to” dropdown option will show up. Go for the “Manual” option. You can also select the “Software-controlled” option. If you wish to modify all the existing PWM, select and modify them to “Manual.”
- Select “Remember it” to finish. Then, return to the home screen and find the configured PWM and manage the fan speed.
- You can also automatically manage the fan speed with Speed Fan. For that, you have to open the “Fan Control” section from the “Configure” window.
- Then, select “Advanced Fan Control.” It will show every fan controller of the system. If it doesn’t show any, then Speed Fan can not change the speed.
- Pick the “CPU Fan Control Strategy” option. You may select “Add” to generate a new CPU fan control strategy.
- Select the temperature responses beneath the “Temperatures” section. Selecting them will show a graph on the right side. Choose “Add” to generate a fresh temperature response.
- The temperature response graph will show different temperatures. Use the arrows to manage the maximum and minimum temperatures.
- After setting up the fan control strategy, pick the value of “Hysteresis” temperature. It will decide how far the minimum temperature should fall before closing the fan control. It prevents fluctuations of the fan.
- Finally, select “Ok” to apply your fan control strategy.
Changing CPU Fan Speed with External Fan Controller
- You may also apply the external fan controller to cool down the PC system. The process is convenient, but it will need some expense.
- The external fan controller works manually, and you can manage the temperature and fan speed.
- There are many excellent and dependable fan controllers you can get. However, “Thermaltake Commander F6” and “Corsair Commander Pro” are two of the most effective fan controllers.
Summary: Change CPU Fan Speed without BIOS
- Preliminary
- Download the latest version of SpeedFan
- Configure Speedfan
- Start Control Panel from the Start Menu.
- Go to Hardware and Sound then click Power Options.
- Select High Performance under Preferred Plan.
CPU fan is the significant component of your computer/Laptop, which ensures to cool your computer/laptop when it heats up. When your system is heating up because of heavy games or overwhelming Software, the CPU fan lets the heated air out of the exhaust vent of the system and enables your computer to work correctly and stay calm.
If, in some cases, your CPU fan speed is not fast enough to cool down your computer, then you can adjust the fan speed through Bios. But the problem with Bios is that sometimes it fails to work appropriately in changing the fan speed. That's the time when you need to find alternative ways.
Fortunately, two other techniques can be used to adjust the CPU fan speed if you can't use Bios to change your CPU fan speed.
Fan controller software
External Fan controller
These two techniques will be discussed here in detail. Let's start with the first one.
Fan controller software
Without using Bios, the best way to adjust the speed of the CPU fan is to use Fan controller software. This Software, when installed, automatically detects the temperature of your computer and adjusts the CPU fan speed according to the requirement of the system.
Plenty of Software is used for CPU fan speed adjustment like SpeedFan, Corsair Link, HW Monitor, Notebook Fan Control, etc. But We will discuss some of them below.
SpeedFan
The first and the foremost used Software is SpeedFan. It is a free software for windows that can consistently monitor the CPU's temperature and speed of the fan. This Software comes with both manual and automatic fan adjustment options and is one of the most popular used Software.
Due to its complicated usage, those using it for the first time need to understand the procedure carefully.
This article will explain it in some easy steps to let you know how it works.
- First, you need to download the Speed Fan Software from the SpeedFan website and then install it on your computer
- After installation, open the application, and all the buses on your motherboard will be scanned automatically.
- Now, you have to configure settings. To do so, click on configure in Software and then select Advance
- Then click on Chip to open the dropdown menu. Here find the PWMs to be selected and controlled. Click on those PWMs.
- Now, move towards the set to dropdown, and you will find two options, manual and Software controlled.
- Select one of them and check the remember it option, then press Ok
- If you select the manual option, you will see all your selected PWMs. You can configure them to control the CPU fan speed manually and choose the software-control option.
- The software-control option will automatically detect the temperature of your CPU, and it will adjust the fan speed according to the need of your computer.
Notebook Fan control Software
Notebook Fan control is another good choice for controlling the CPU Fan speed. This Software works on Windows 7, 8, and 10. It can detect the CPU temperature and adjust the fan speed accordingly. 
You can use this Software easily because it does not have any complications in its configuration. It starts working automatically as you turn on your computer.
Apart from these two, you can also use ZOTAC FireStorm Software, which is easy to use and does not require Bios to work.
These Software gets their job done perfectly, yet another technique can be also be used to change the CPU speed without Bios. An External Fan controller can be used to adjust the Fan speed.
External Fan Controller
You can also choose this technique if you cannot easily use the Software or if the Software, for some reason, failed to work on your computer. The External Fan Controller can be used to control your computer's fan speed manually, without Bios.
It allows you to start/stop or increase/decrease the fan's speed manually and monitor the temperature of your computer. Consider certain features while buying the external fan controller, like; the pin support, controls, esthetics, and channels of your product.
Conclusion
You need to be careful about the Fan speed of the CPU, or else if it gets overheated, you may face the worst scenario. Even the CPU may catch fire. So, you need to understand and consider the above-discussed options for changing the CPU fan speed, just in case the Bios is not working.
You can also get super-fast fans for your computer, but it will disturb you with its roaring noise. Therefore, Fan controller software and External fan controller is a better option.
