It seems like you are experiencing an issue with the Switch User functionality on your Windows 7 computer where the system becomes unresponsive when trying to switch between users. This could either be due to a system freeze or an issue with the keyboard and mouse not responding. Here are some troubleshooting steps you can try to resolve this issue: 1. Check Keyboard and Mouse Connection: Ensure that the keyboard and mouse are properly connected to the computer and that they are functioning correctly. You can test them on another computer to rule out any hardware issues. 2. Update Drivers: Make sure that your keyboard and mouse drivers are up to date. Outdated drivers can sometimes cause issues with input devices. 3...