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My laptop failed to boot the error message says windows failed to start. A recent hardware or Software change might be the cau

Try starting Windows in Safe Mode and if that starts okay, it's not a hardware issue.

If you can remember installing a driver just before the problem occurred, or installed some software that includes drivers such as third-party firewall, antivirus or CD-burning software, uninstall that software in Safe Mode, then try restarting normally.