Greetings, and welcome to TSF. I see one problem that could be the root of your troubles. Let's fix it and see if that is all we have to do.
Please print out or copy this page to Notepad. Make sure to work through the fixes in the exact order it is mentioned below. If there's anything that you don't understand, ask your question(s) before proceeding with the fixes. You should 'not' have any open browsers when you are following the procedures below.
Go to My Computer->Tools/View->Folder Options->View tab and make sure that 'Show hidden files and folders' (or 'Show all files') is enabled. Also make sure that 'Display the contents of system folders' is checked. If you have Windows XP, the search feature is a little different. When you click on 'All files and folders' on the left pane, click on the 'More advanced options' at the bottom. Make sure that 'Search system folders', 'Search hidden files and folders', and 'Search subfolders' are checked.
For the options that you checked/enabled earlier, you may uncheck them after your log is clean. If we ask you to fix a program that you use or want to keep, please post back saying that (we don't know every program that exists, so we may tell you to delete a program that we think is bad to keep).
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Run
HiJackThis and click "
Scan", then check(tick) the following, if present:
O16 - DPF: {15AD6789-CDB4-47E1-A9DA-992EE8E6BAD6} - http://static.windupdates.com/cab/M...e/bridge-c9.cab
Now, with all windows closed except
HiJackThis, click "
Fix checked".
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Post back a new log, and let us know how everything goes.