Emsisoft Emergency Kit is a collection of portable software, intended to scan and clean infected computers for malware. No installation. Download from http://www.emsisoft.se/en/software/eek/
and unzip to a memory stick (USB) - 246 MB uncompressed. Start the different parts from Run\*.exe. The application is multilingual (28 languages).
Emergency Kit Scanner (a2emergencykit.exe)
Includes a graphical user interface. Search the infected PC for viruses, trojans, spyware, adware, worms, dialers, keyloggers and other malign programs. Found malware can be moved to quarantine or finally deleted.
Commandline Scanner (a2cmd.exe)
This scanner contains the same functionality as the Emergency Kit Scanner but without a graphical user interface. The commandline tool is made for professional users and can be used perfectly for batch jobs. http://www.emsisoft.com/en/software/cmd/
lists the parameters you can use.
HiJackFree is for advanced users who want to detect and remove malware manually. With HiJackFree you can manage all active processes, services, drivers, autoruns, open ports, hosts file entries and many more.
BlitzBlank is a tool for experienced users. It is often almost impossible to delete a malware file while Windows is running. BlitzBlank deletes files, registry entries and drivers at boot time before Windows and all other programs are loaded.