Trojan.poweliks!gm

What is with the Trojan.poweliks!gm blocked msg I started getting yesterday. If it's blocked why do I have to restart again? Who is causing it? Link only gives numbers for attacker and I'm no engineer. This crap started after signing up for optumbank health insurance account. Today only went to yahoo to send email to Allstate Insurance. Full scan only shows it was blocked. The Trojan not the email.