In order to check for other types of malware that your antivirus doesn't find, please click on the link below and follow all the steps, in the order they are given. It may take some time to run all the scans but it will be worth the effort.

“Expand” the post titled: "Please try this" at the link below:
http://www.cnet.com/forums/post/f742c795-5881-433b-a29b-6d758efe5cd3/

Hope this helps.

Grif