Good Gear Guide
In Pictures: 11 (free!) Microsoft tools to make li...
Windows Defender Offline
The Windows Defender Offline tool runs from some form of removable media – USB stick, CD – to defeat smart malware that might otherwise disable security measures. The machine being cleaned is booted from the removable media and inspected before malware is running and has the chance to hide itself or disable the scan. Note: Microsoft recommends downloading the tool to a known good computer to prevent Windows Defender Offline itself from being corrupted.
In Pictures: 11 (free!) Microsoft tools to make life easier