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How to eliminate speedfan driver problems

The speedfan.sys (SpeedFan) file is a Windows driver. Generally, drivers are used by Windows to enable internal components like graphic cards and drives, or external devices, such as printers, backup media or input devices.
Click here to check if you need to update your speedfan driver.

The speedfan.sys process is also known as SpeedFan (Version x64 Driver, x32 Driver) and is a part of SpeedFan - Hardware and SMART Monitor or, as the case may be, Windows (Version 2000 DDK driver). This software is produced by Almico Software or, as the case may be, Windows (windows.microsoft.com) (Version 2000 DDK provider). An obsolete or defective version of speedfan.sys can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about speedfan.sys SpeedFan

speedfan.sys is not part of Windows, but it is important nonetheless. The file speedfan.sys is found in a subdirectory of C:\Windows. Frequently occurring are file sizes such as 28,664 bytes (80% of all these files) or, as the case may be, 14,104 bytes.
If necessary, you can manually stop or start this driver in the Device Manager. The Device Manager can be found in Windows Control Panel under Hardware and Sound/Devices and Printers/Device Manager. The driver facilitates access to your computer's hardware and accessories. The program executes in the background, and can only be terminated using Windows Task Manager. The original file has a digital certificate (see its file properties). For this service - unlike Windows' own system services - there is no good description available. Speedfan.sys is no part of Microsoft Windows. speedfan.sys appears to be a file that was compressed by an EXE-Packer. This technique is often used by trojans to keep the file size small and also hamper debugging efforts. However, this in itself is not sufficient reason to presume malicious intent, since even well-intentioned, professional software producers take advantage of compressed files. For this reason, 32% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

A speedfan.sys file has a 36% certainty of being dangerous if it is found in the C:\Windows\System32 directory. In this case, the file size is usually 24,184 bytes (66% of all these files) or, as the case may be, 5,248 bytes. This process does not have a visible window, and does not appear on the taskbar. It is unusual for the service not to provide any indication of how and why it is required. The file is no part of Microsoft Windows. The original file has been signed by a trusted signature authority. This lets you check your copy to see if it is a counterfeit. speedfan.sys appears to be a file that was compressed by an EXE-Packer. This technique is often used by trojans to keep the file size small and also hamper debugging efforts. However, this in itself is not sufficient reason to presume malicious intent, since even well-intentioned, professional software producers take advantage of compressed files.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves speedfan.sys. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about speedfan?

It's monitors the Temp. of your computer..
Rick
Speedfan.sys is the system service for Speedfan.exe, a CPU and system fan monitoring/management program. (further information...)
SpeedFan is an hardware monitoring software that is able to change fan speeds according to system temperatures. SpeedFan can read S.M.A.R.T. values (and temperatures) from your hard disks and change the FSB speed. (further information...)
Tony
Temperature monitoring software

Summary: 2 users judge speedfan.sys to be an essential file that should not be touched. source: file.net

How to uninstall SpeedFan - Hardware and SMART Monitor or Windows

To remove SpeedFan from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. You find it in the lower left corner of the taskbar.
  2. Type the word uninstall.
  3. Click Add or remove programs.
  4. Now locate SpeedFan - Hardware and SMART Monitor or Windows in the list of displayed applications.
  5. Click the program, and then click Uninstall.
Remove software in Windows 10
speedfan.sys SpeedFan fix

How to tell if speedfan.sys (SpeedFan) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of SpeedFan. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for SpeedFan or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or speedfan.sys is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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