Look for an Fn, F Lock, or F Mode key on your keyboard. If you find one, press the key and then try using F4. If it still doesn’t work, the specific action you’re trying to repeat may not be ...

One way to lock a Windows computer from your keyboard is by pressing Ctrl + Alt + Del and then selecting the "Lock" option. If you only want to use the keyboard, you can lock Windows with the ...

To lock your cells in Microsoft Excel, you just need to head into the program's "Protection" tab.; Locking a cell in Excel will make it so viewers can't change the data inside of that cell, which ...