atieclxx.exe is a program which is most likely legit. So, if atieclxx.exe is on your laptop or desktop computer, it is most likely ok, and will NOT cause problems. Even if your PC is virus-free, it is still recommended to use a good antivirus with a good detection rate, in order to yourself your PC against viruses and malware.
Normally, this application is stored in C:\Windows\System32\atieclxx.exe.
The MD5 checksum for this program is 13facfcff374fd2d9bc7c5596eee0f90.
This program is NOT registered as a Windows service. This is very good.
64-bit code has been detected. This application can put to good use the full power of a modern PC processor.
This executable does NOT have visible elements of user interface. This is usually a bad sign.
atieclxx.exe has a digital signature. Today the large majority of clean programs are digitally signed.
The digital signature found in atieclxx.exe is valid. This is most likely a clean, ok program.
Digitally signed by: Microsoft Windows Hardware Compatibility Publisher
Certificate's issuer name: Microsoft Windows Third Party Component CA 2012
This executable does NOT have an uninstall routine set up in registry.