At its core, Hiren’s BootCD is a bootable ISO image containing a massive collection of free and legal software designed to fix common (and uncommon) computer problems. Because it runs from a CD or USB drive, it operates independently of your installed operating system, making it invaluable when Windows fails to start. Core Capabilities: Hirens Boot CD - How to download, boot and use it!
Go to the official source:
You might think, "I can just boot a Windows installer USB. Why do I need Hiren’s?" hiren cd iso