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.
Use a tool like Rufus to burn the ISO onto a USB drive.
What is your computer having (e.g., won't boot, pop-ups)? What operating system are you running (Windows 10, 11)? I can help guide you on how to use the tool properly.
The latest supported version is Kaspersky Rescue Disk 18, which includes a graphical interface, file manager, and registry editor. If you're facing a specific infection, tell me: