As title mentions, I believe I'm infected. I have high memory and CPU usage. Scan with MB and SpyBot reveals no problems. I have all sorts of little bugs that I can't find an explanation. Even internet explorer keeps having download ability turned off. New Dell computer. A few weeks in, started having problems after installing my usual suit of office software. The first symptom was last week when Defender turned off on its own. It wouldn't let me restart. There was an error saying that another program was preventing it from starting. Attempted to recover system in regular and safe mode...never would allow me to. I have no antivirus installed. I've downloaded FARBAR and waiting for instructions. Ran a scan. Don't know what else to do at this point. Thanks for any help.