Can’t open AsIO.sys (2) I get this message when I log on after a reboot. I search for the file, but can’t find it with search or the command prompt. What does this file do, and can it be created and put in the proper folder?

AsIO.sys is a system file that is related to ASUS motherboards. It is a driver file that is responsible for managing the communication between the hardware and the operating system. If you are getting an error message that says “Can’t open AsIO.sys (2)” when you log on after a reboot, it means that the file is either missing or corrupted.

Here are some steps that you can take to fix the issue:

1. Check if the file is present in the correct folder: The AsIO.sys file should be located in the C:WindowsSystem32drivers folder. You can navigate to this folder using the File Explorer and check if the file is present. If it is not present, you can try to download the file from a reliable source and place it in the correct folder.

2. Update the ASUS drivers: If you are using an ASUS motherboard, it is recommended to update the drivers to the latest version. You can download the latest drivers from the ASUS website and install them on your computer.

3. Run a system file checker: The System File Checker is a built-in tool in Windows that can scan and repair corrupted system files. You can run this tool by opening the Command Prompt as an administrator and typing the command “sfc /scannow”. This will scan your system for any corrupted files and repair them if possible.

4. Perform a clean boot: Sometimes, third-party applications or services can interfere with system files and cause errors. You can perform a clean boot to start your computer with only the essential services and applications. This can help you identify the cause of the issue and fix it.

In conclusion, the AsIO.sys file is an important system file that is related to ASUS motherboards. If you are getting an error message related to this file, you can try the above-mentioned steps to fix the issue. It is important to be cautious when downloading files from the internet and only download from reliable sources.


In conclusion, fixing the “Can’t open AsIO.sys (2)” error message requires some troubleshooting steps, but it is possible to resolve the issue. By checking the file location, updating drivers, running a system file checker, or performing a clean boot, you can identify and fix the problem. Remember to be careful when downloading files from the internet and only download from trustworthy sources. If you have any further questions or concerns, feel free to ask.

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