Locate the key (usually near the bottom-left) and the Esc key. Press Fn + Esc simultaneously.
Function keys on Dell laptop requires Fn+F1-F12 (default is multimedia/oem key) ... In most dell laptop (e.g. Studio 1555, Inspiro... Super User Dell Latitude 14 Rugged Extreme – 7414 Getting Started Guide Enabling the Function (Fn) lock * Press the Fn+Esc keys. NOTE: Other secondary function keys on the top row are not affected and r... Dell How do I change the Function Key settings? - Microsoft Learn Feb 14, 2012 — how to enable function key in dell laptop