The IAA event monitor service is installed by the Intel Application Accelerator, which is an optional component that can be installed on computers with Intel processors that is supposed to increase performance. I would recommend you leave this set to automatic. If you do not want it then uninstall the IAA.
Please visit /tools/services/ for the complete Vernalex.com Services utility.
"It is much more comfortable to be mad and know it, than to be sane and have one's doubts." --G. B. Burgin