These days many viruses and malwares target your PC , rendering the computer unbootable. Microsoft Standalone System Sweeper is a recovery tool that can help you start an infected PC and perform an offline scan to help identify and remove viruses, trojans, rootkits and other forms of malware effectively.
It can also be used if you cannot install or start an antivirus solution on your PC, or if the installed solution can’t detect or remove malware on your PC.This tool installs itself to either a USB drive or a blank CD/DVD disc and creates a bootable media that can be used to recover your system in the event of a malware or virus infection.
please ensure that you have a blank CD, DVD, or USB drive with at least 250 MB of space, and an active Internet connection .To use Standalone System Sweeper ,users need to boot from the disc or USB device which in turn loads the tool that gives you the options to scan the PC and recover it.
It will load the Windows preinstall environment to run the Microsoft Standalone System Sweeper application for scanning .This will first scans your boot sector for any corrupted files or settings. It then scans your system for any known malware or infections.