The process atkacpi.sys belongs to the ATK0100 or ATK0110 ACPI Utility by ASUSTek COMPUTER INC. The file can be found in the System32/drivers folder of the Windows XP/7 operating systems. The atkacpi.sys is a driver file that allows the operating system to gain access to the BIOS. It also enables the use of the hotkeys from the keyboard. The file lets the user run BIOS adjustments over the operating system, without the need to enter BIOS. The process can be enabled or disabled from the Services though the Control Panel. The atkacpi.sys is not a Windows core file which makes it safe to be uninstalled and disabled. If the process is disabled or uninstalled, some features, like using hotkeys and overclocking may not run. The process may be vulnerable to possible virus or attacks because it is a compressed file.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. atkacpi.sys. is used by ATK0100, If you shut down atkacpi.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop atkacpi.sys, permanently you need to uninstall the application that runs this process which in this case is ATK0100, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed atkacpi.sys

A process usually a part of an installed application such as ATK0100, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if atkacpi.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that atkacpi.sys, belongs to, in this case ATK0100