In C: program, I have a folder called Elex-tech and in that resides the YAC folder.
What's in the Elex-tech folder besides the YAC folder? Safest is to move the whole folder to C
temp or something similar, create it if you don't already have it. The fact that this folder is inside another folder is by itself suspicious.
If it's something you know about and is safe, move only the YAC folder. Then whatever tries to load it won't find it in the registered path so can't load. If something strange happens you can put it back and try something else.
Reboot the computer and if it runs fine delete the folder. It will still be in the uninstall list and the registry so run CCleaner to remove all references.
Since you're at it, CCleaner also lists the stuff that's loaded at Windows bootup and gives you a choice to disable or remove the undesired entries.
Some programs (like a wellknown PDF reader) think they're so important that they'll load themselves or a "quickloader" in background for "faster startup". They're still slow as molasses in Alaska to start up and just waste resources.
Edited to add what I found DuckDuckGoing Elex-tech:
http://manual-removal.com/remove-yet...c-mx-redirect/