hwdetect.exe is a Trojan.MancSyn-B. hwdetect.exe opens a back door. Related files: %Startup%\office.exe %System%\hwdetect.exe %System%\walib32.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill hwdetect.exe process and remove hwdetect.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.