CTRL+Fn+Right Shift
Type some of those keys in Microsoft Word... Work?
CTRL+Fn+Right Shift twice(...meaning CTRL+Fn+Right Shift then let go of Shift while still holding CTRL and Fn, then press Shift again.)
... to turn it off. *
* The turn off could be done on some systems with just the same keystroke as the turn on - not the repeated. Some systems the repeated just cycled it back on. *grin*
Another option...
Starting in normal mode (haven't changed using the below or above methods - all keys work as default expected.)
Press CTRL+Right ShiftThis activates secondary function keys (all the upper blue symbols.)
Access upper blue symbols by using the regular shift+key you want combo.
Press CTRL+Right Shift again
This activates tertiary blue symbols (all the lower blue symbols on the keys.)
To access these, use CTRL+ALT+key you want.
Press CTRL+Right Shift to deactivate.
All gleemed from (read more about it) here: