Download KillBox (
http://www.greyknight17.com/spy/KillBox.exe). Run KillBox and check the box that says 'End Explorer Shell While Killing File'. Next click on 'Delete on Reboot'. For each of the following files below, check the box that says 'Unregister .dll Before Deleting' if it's not grayed out. Copy and paste each of the following into KillBox (hitting the X button for each file - choose NO when it asks if you want to reboot):
c:\program files\common files\tsa\
c:\program files\windows adservice\
c:\windows\downloaded program files\otxmedia.dll
c:\windows\downloaded program files\preloader.dll
Reboot and post a fresh HJT log, along with a report on your condition.