What is AsIO?
The genuine AsIO.sys file is a software component of Asus PC Probe by ASUS.
ASUS PC Probe is a utility software used for hardware device management which is often preinstalled on computers manufactured by ASUS. AsIO.sys is a driver that is necessary for the proper functioning of ASUS PC Probe. This file is not a critical Windows file and can be removed if known to create problems.
ASUS PC Probe is a freeware application designed for the Windows platform that allows users to manage processor and graphics processing unit speeds, monitor and manage system fan RPM, AGP power levels, GPU and RAM temperature. After installation, the program resides in the taskbar and alerts the user on possible hardware issues such as the processor overheating. This program requires an ASUS motherboard as a prerequisite to work.
ASUS is a Chinese personal computer vendor that manufactures everything from desktops and laptops to mobile phones, monitors, optical storage devices, and graphics cards. In 2013, it was the world's fifth largest computer seller, in terms of sales. The company began launching graphics cards in 2005 with their initial PhysX accelerator card. ASUS was founded in Taipei in 1989 by T.H. Tung, Ted Hsu, Wayne Hsieh and M.T. Liao, all previously employed by Acer. The company is currently headquartered in Taipei, Taiwan.
AsIO stands for Asus Input Output Drive
AsIO.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc.
The free file information forum can help you determine if AsIO.sys is a Windows system file or if it belongs to an application that you can trust.
Run a free scan to check for AsIO drivers in need of updating
AsIO.sys file information
The process known as AsIO or ASUSTeK Computer belongs to software AsIO by ASUSTeK Computer (www.asus.com) or Microsoft Windows Hardware Compatibility Publisher.
Description: AsIO.sys is not essential for the Windows OS and causes relatively few problems. AsIO.sys is located in a subfolder of C:\Windows—common is C:\Windows\SysWow64\drivers\.
Known file sizes on Windows 10/11/7 are 15,232 bytes (51% of all occurrences), 13,440 bytes and 4 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs.
The program has no visible window. There is no detailed description of this service. AsIO.sys is not a Windows core file. The process has no file description. It is certified by a trustworthy company. The AsIO.sys file is a Verisign signed file.
AsIO.sys appears to be a compressed file.
Therefore the technical security rating is 32% dangerous, however you should also read the user reviews.
Recommended: Identify AsIO.sys related errors
If AsIO.sys is located in the C:\Windows\System32\drivers folder, the security rating is 37% dangerous. The file size is 12,400 bytes (36% of all occurrences), 11,296 bytes and 4 more variants.
There is no file information. The program has no visible window. There is no detailed description of this service. It is not a Windows system file. AsIO.sys is a Verisign signed file. AsIO.sys is digitally signed.
AsIO.sys appears to be a compressed file.
Important: Some malware camouflages itself as AsIO.sys. Therefore, you should check the AsIO.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
Best practices for resolving AsIO issues
A clean and tidy computer is the key requirement for avoiding problems with AsIO. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To get your computer running as fast as it did on day one, you can 8reset your PC. Your personal files will remain intact, but any programs you installed will need to be reinstalled.
To help you analyze the AsIO.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. A good Bantivirus software detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.
Other processes
idrivert.exe arcpluginie.dll dbxsvc.exe AsIO.sys browser_broker.exe hpmsgsvc.exe nvprofileupdater64.exe soundman.exe net_updater64.exe scantopcactivationapp.exe ground.exe [all]
Score
User Comments
brbg
Richard P. Jones
Alex
T Munday
Carlos (further information)
Tezatskeg
Ghost
EAMU
Greg Thomson
Art
agecounter
Peter
SomeOne (further information)
CT
Summary: Average user rating of AsIO.sys: based on 21 votes with 17 user comments. 9 users think AsIO.sys is essential for Windows or an installed application. 2 users think it's probably harmless. 9 users think it's neither essential nor dangerous. One user suspects danger.