Found this site while trying to find solutions for my husband's computer. He's been hit with the conhost.exe virus it seems. And now we're also noticing his windows security system is off and it wont come on at all. So we're at a loss on it. Mcafee didn't catch it and it's not even seeing it. I can't even get help from Mcafee themselves. Hoping to find answers here for this and lord only knows what will pop up in the future. LOL!