If you did the default installation, you probably accepted the sponsored version which granted all sorts of installation rights to all sorts folks that you dont want in your computer
Please
Click here!, and
follow the recommendations in the guide.
If you're still having trouble, We'll need you to use a free diagnostic tool,
Hijack This. Follow the instructions in step five of
this guide, and post your log as a new topic in the
Hijack This forum. It will get a better response there from the people most qualified to analyze logs.
Most of what
Hijack This lists will be harmless or even essential, DO NOT delete or modify anything yet! Someone will be along to tell you what steps to take after you post the contents of the scan results.
DO NOT POST the HJT SCAN HERE. DO NOT REPLY WITH IT IN THIS THREAD.
POST THE HJT LOG IN A NEW TOPIC POST AT THE MALWARE FORUM. THEY WILL TAKE CARE OF YOU THERE.
(Sorry for the shouting, but so many post back in these threads its not funny)
Best regards,
EMCguy