Hello Prabhu, It seems like you are facing an issue with Windows 7 Ultimate where the system hangs at the "Windows is shutting down" screen and you are unable to restart or shutdown your PC. This issue can be quite frustrating, but there are a few steps we can take to troubleshoot and resolve the problem. Here are some steps you can try to fix the issue: 1. Update Drivers: - Ensure that all your drivers, especially the graphics and chipset drivers, are up to date. Outdated drivers can sometimes cause shutdown issues. 2. Check for Windows Updates: - Make sure your Windows 7 operating system is fully updated. Sometimes, installing the latest Windows updates can resolve system shutdown problems. 3. Check for Malware: -...