Maybe this will work
I had a virus very similar pop up a little while ago. It disabled AVG, Malwarebytes and generally was a bl**dy pest.
I contacted my local computer genius and even he couldn't get rid of it so I googled it and found pages of info, all of it very technical and not at all simple.
Having nothing else to do I started reading the prophets of doom and considered a complete re-install until one short reply caught my eye, it follows:
If the icon appears on the task bar right click properties, highlight the address and write it down, make sure you get it all.
Shut down and restart in safe mode and then search for the address, lo and behold it came up with a prefix that prevented me from finding it before.
DELETE THE B*****rd and then restart
As you can tell I am not an expert but it worked, felt really smug.
Hope it works for you.
PJ