1. Keyboard failure: First, check whether the keyboard works normally. You can try pressing other keys to see if there is any response. If other keys don't respond, it may be that there is something wrong with the keyboard itself and it needs to be repaired or replaced.
2. Software conflict: Sometimes, specific keyboard shortcuts may conflict with shortcuts in the system or other applications. You can try pressing F5 in different applications or environments to see if there is any response. If it works properly in other applications, the current application or system settings may be the cause of the problem.
3. Driving problem: The keyboard needs correct driving support to work normally. You can try to update the keyboard driver, or uninstall and reinstall the keyboard driver in Device Manager.
In addition, there are other factors that may cause the keyboard to be unresponsive, such as physical damage and connection problems. If the above solutions are ineffective, it is recommended to contact professionals for further inspection and maintenance.
Extended content: Besides F5, there are many other commonly used shortcut keys on the keyboard, such as Ctrl+C copy, Ctrl+V paste, Ctrl+Z undo, etc. Learning and skillfully using these shortcut keys can improve work efficiency and reduce dependence on the mouse. At the same time, knowing some troubleshooting methods of the keyboard can also help us solve problems quickly and keep the keyboard in good condition.