I had the same thing happen a few times. I forget what they're call it, but you got a worm sneaky b but not a mig deal. You got an infection of some sort. All in all nothing too serious, more resource hogs than anything, but that's not what's so maddening about them A bunch send BHO's (browser helper objects) into your system with one job -- block all spyware/security sites using your own firewall or hijack the browser, changing the address to any of those sghts. So when you investigate what's going on, your virus software appears to have died and won't let you do what you need to fix it.
I'm pretty sure I killed mine with Superantiapyware and malwarebytes.com They're both free.. Superanti for two weeks, Malware forever if you want or you ca nbuy a copy as well . If I remember correctly I put those two on a USB on someone's clean computer, then booted mine in safe mode, ran them a few times in a row. When SPybot could get an update past them, I sicc'd it on them and that was ti intil laterl
I think what I ended up doing was DL'ing a few/sweep programs installed onto 1 gig usb drive, got around em like that for a minute that way, enough so Spybot could get it's foot in the door and then kick it's butt.
good luck