Another method by keyboard is CTRL+ALT+DEL and enter, then use tab button to guide thru until lower right corner SHUTDOWN icon .. for mouse issue, try another USB port .. else try to connect both mouse, Windows can accept 2 or more mouse simulaneously ..
If the mouse works, goto Device Manager and see if the other not working mouse has exclamation mark? .. try uninstall and update the driver with another working mouse ..
Thanks. The mice are wireless but I moved the charging pad to another USB port. I will look into Device Manager.
Today the mouse moved but did nothing AND Ctrl, Alt, Delete would NOT work and the power switch on top of the computer also failed, so I had to use the switch on the back of the computer to turn it off then turn back on in the standard way.
Have seen where devices don't seem to work and go to the basic of unplugging the main power cord from the computer, let set for several minutes for residual power to drain from the motherboard and try again. The process seems to 'clear the mind' of the computer. The same can be done with those Notebooks that have a user-removable battery.