At this stage your machine looks to be clean of malware, so the problems you are experiencing are not likely to be malware related. I think the best and fastest solution for you is to post on a PC troubleshooting forum like the Browsers, Internet & email forum at WhatTheTech. They specialize in handling problems like this so you are certain to get expert assistance and a speedy resolution is very likely.
I'm sorry that I could not be of more help to you, and I wish you the best of luck with solving your computer problems. If you have any questions or require any other assistance please let me know.