Maybe you have found your problems.
The best way is to post a HijackThis log and let an expert look at it for you.
Post a HijackThis Log
Before you post a HijackThis log
Important: Create a folder on the C: drive called C:\HJT.
You can do this by going to My Computer (Windows key+e) then double click on C: then right click and select New then Folder and name it HJT.
Unzip HijackThis into this folder.
If required a tutorial is here =
HijackThis Folder Tutorial
Download
Hijack This to your desktop open it and click on the Hijack.exe it will open and use the default path, check do you wish an Icon.......click on Icon and choose
scan system and save a logfile usually in notepad.....copy and paste the logfile in your next post, using Ctrl+A to copy All and Ctrl+C to copy and Ctrl+V to paste.
Do not Fix any entries with HijackThis yet
An log Expert will help you after you posted your log
If you think your post has got lost click on the red triangle on the right-hand side of your post and request your post be moved to the
Security Section.