Function Key Lock -

A: Num Lock controls the number pad; Fn Lock controls the F1–F12 row.

“Does pressing F5 refresh your browser or lower your screen brightness? That depends on one tiny setting: Fn Lock. function key lock

A: Try updating keyboard drivers or checking for vendor-specific software (e.g., Dell Power Manager, Lenovo Vantage). A: Num Lock controls the number pad; Fn

No lock key? Go to BIOS or your laptop’s keyboard manager. Dell Power Manager