is a free, official tool provided by Kaspersky Lab to scan and disinfect infected computers that cannot boot into Windows. It is designed to be used in emergencies to remove viruses before the operating system loads, ensuring malware cannot hide or actively defend itself.
Use a tool like Rufus to burn the ISO onto a USB drive.
Insert the USB into the infected machine, boot from it (via BIOS/UEFI), and run the scanner.
Kaspersky Rescue Disk is completely free for personal use. Attempting to use "cracks" or "keygens" for Kaspersky products is unsafe and unnecessary.