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.
Reboot into Safe Mode (hit F8 key until menu shows up). Make sure to close any open browsers.
Go to Start->Run and type in
services.msc and hit OK. Then look for dnetc or distributed.net client. Once found, right click and Stop the service. Then double click on it to open it. Under Startup Type, choose Disable.
Run a scan in HijackThis. Check each of the following and hit 'Fix checked' (after checking them) if they still exist (make sure not to miss any):
O4 - HKCU\..\Run: [SearchSetter] C:\WINDOWS\System32\searchsetter[1].exe-auto
O23 - Service: distributed.net client (dnetc) - Unknown owner - C:\WINDOWS\System32\iosdt\iosdt.exe
For ALL those O18 entries (Logitech), you may check and fix them also.
Delete the following Files/Folders (delete folders if no filename is specified) according to their directory (if none, just do a search for them) and delete them if they exist:
C:\WINDOWS\System32\searchsetter[1].exe-auto
C:\WINDOWS\System32\iosdt\
Reboot into Normal Mode and run new HijackThis scan. If there were some entries that didn't show up in Safe Mode, you may check and fix those that appear now in normal mode (if you do that, make sure to run a new scan again). Save the log file and run
KRC HijackThis Analyzer in the same folder to get the
result.txt log. Just post the contents of the result.txt file in the forum.