Download
combofix.exe to your Desktop.
Doubleclick on combofix.exe and follow the prompts. A window will open with a warning. Type "1" (and Enter) to start the fix. When the scan completes, Disk Cleanup will run and then a text window with your log will open. Please copy and paste that log back here.
A caution - do not touch your mouse/keyboard until the scan has completed. The scan will temporarily disable your desktop, and if interrupted may leave your desktop disabled. If this occurs, please reboot to restore the desktop.
Also go
here and download Silent Runners.vbs (use IE to download it) to a new folder on your drive and run it. It generates a log too. It takes a minute or two and it will notify you with a popup when your log is ready (it will be in the new folder you created). Please post the information back in this thread. If your AV queries the script, allow it to run. It's not malicious.