Ok, it seems to me that you still have malware running loose on your computer. The following is what I would do.
1. Download Malwarebytes Anti-Malware.
http://download.cnet.com/Malwarebytes-Anti-Malware/3000-8022_4-10804572.html
2. Download CCleaner from piriform.
http://download.cnet.com/ccleaner/
3. Download SUPERAntiSpyware.
http://download.cnet.com/SuperAntiSpyware-Free-Edition/3000-8022_4-10523889.html
All of the software above is free, and Cnet is a safe site.
Install the 3 programs and follow any instructions to update them. Pay close attention when installing so you don't install any new browsers or toolbars. This is just a matter of checking the correct boxes.
Now open CCleaner by double clicking the icon on your desktop. Click Run Cleaner.
Click OK to permanently delete files. ( Its ok, these are just cookies & temporary files )
When the green bar reaches 100%, close the program.
If not already done, disconnect from the internet and disable your resident security programs.
Open Malwarebytes by double clicking the desktop icon. Click Perform full scan. This could take 30 or 40 minutes, so be patient and don't interupt the process.
When the scan is complete, click OK, and then click Show results. Make sure that every entry is selected, and click Remove Selected.
Restart your computer.
Open SuperAntiSpyware from the desktop. Click the scanning control tab. ( Under Preferences )
Under scanner options make sure the following fields are checked.
a) Close browsers before scanning
b) Scan for tracking cookies
c) Terminate memory threats before quarantining
Click the close button to leave the control centre screen.
Click Scan your computer ( Perform complete scan )
Follow the instructions to start the scan
When its done restart your computer and re-enable your antivirus program.
If the above doesn't sort out your problems then go see a tech.