FN keys non function

Wanda76513 - Feb 14, 2016 at 12:26 PM
Hello, I had to reset my computer after losing my desktop screen, was only showing the apps start screens. when I did the reset, now my fn keys are not responding right. they used to be locked so I could press the f5 key to mute my speakers. now it makes the screen go full page then back when pressed again. I can still get the speaker to work pressing the FN key +the f10 key, but the same action response when i press the FN key + F3. what can I do to get back the start up default to lock the FN keys in place?