Putty F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12 Function keys not working

If you have any problem with any of the Function keys in putty do the following
Open Putty, Under Category, Under Terminal, Click Keyboard, under the function keys and keypad section, try choosing different terminal emulation type until it fixes your problem. :-)