The atitool.sys is a low-level driver also called the ATITool Low-Level Driver owned by ATITool Overclocking Utility (also known as ATITool). This software is owned and developed by W1zzard. A Low-Level Driver (LLD) or atitool.sys is a collection of software or programs stored in a computer’s library that was designed by Texas Instruments (TI). LLD can also be used for transferring one memory to another memory specifically for EDMA. The ATITool Low-Level Driver has no limit in overclocking. It also supports NVIDIA cards overclocking and the GPU and memory voltage adjustment on VGA-supported cards. The ATITool monitors and controls the temperature and speed of the fan in some supported cards. It is also in charge of removing overclocking lock catalyst for series cards 9000, 9200, 9550, and 9600. The ATITool has full support to all ATI and NVIDIA cards. The latest version to have been developed was the 0.26 version released on the 8th of December 2006.

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

A process usually a part of an installed application such as ATITool, 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 atitool.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 atitool.sys, belongs to, in this case ATITool