You may be temporarily able to stop this malware.
Try this: Tools > Internet Options > Advanced > Browsing
Uncheck the Enable 3rd party browser extensions
If you problem stops then we know that the cause is a bad BHO.
You have tried to remove it with the latest version of the tools you listed
below then you may have a new variant that has not been corrected in the
shredder.
Get help from the experts.
Go to
http://www.spywareinfo.com/downloads.php#det
Download "Hijack This!" [freeware] or download direct (below):
http://www.merijn.org/files/hijackthis.zip
If you get a 404 error or Access denied, try:
http://216.180.252.218/~spywareinfo.com/downloads/tools/hijackthis.zip
Unzip the Download file in a NEW FOLDER that you can create before you start
the download.
DO NOT use any of the TEMP folders that are presently in your computer.
Double-click "HijackThis.exe" and Press "Scan".
When the scan is finished, the "Scan" button will change into a "Save Log"
button.
Click: "Save Log" (generates "hijackthis.log")
Next, HijackThis | Config [button] | Misc Tools [button]
Click: Generate StartupList log [button] (generates "startuplist.txt")
Next, go to the below location:
http://www.spywareinfo.com/forums/
Sign in, then copy and paste both files in your message.
HijackThis Quick Start Help
http://www.tomcoyote.org/hjt/
The Tutorial if you want to know more about the results or the .log file.
http://www.merijn.org/htlogtutorial.html
!!!!
p.s Reset the 3rd party browser setting after the clean up. This is required
by some other useful programs.