Windows 11 includes an emergency restart feature that serves as a safer alternative to forcefully pressing the power button when a PC is unresponsive, reducing the risk of file corruption and system instability. For installing Windows 11 on unsupported PCs, users should assess hardware compatibility, utilize workarounds, back up data, explore community forums, stay updated on patches, consider hardware upgrades, and familiarize themselves with new features. To enhance security, users should enable two-factor authentication, regularly update software, use strong passwords, install antivirus software, be cautious with email attachments, back up data, and educate themselves about phishing scams.