Trojan/Rootkit Removal Help

System runs extremely slow. It is pretty much unusable. I started out by seeing a lot of msiexec.exe and conhost.exe chewing up the RAM and CPU. The respawn if killed. The same symptoms are happening in safe mode as well.

I ran Malwarebytes and removed everything.
I have ran combofix.
I have ran adwcleaner and removed everything.
I ran tdsskiller but it found nothing.
I ran Malwarebytes Anti-Rootkit.
I ran Roguekiller. Removed a couple of the registry keys that had a bunch of random...

Trojan/Rootkit Removal Help