can i get help removing trojan dllhost.exe in multiple instances?

Hello,

I would like to get help removing a Trojan.  I think it is Trojan.poweliks from what I have read on the internet.  Basically my computer slows down, powershell fails to run, and multiple dllhost.exes run using all of my processing power.  My antivirus and antimalware programs wont fix the issue.

Thanks,
Evan