HP 4510s - ProBook - Celeron 1.8 GHz - Troubleshooting; The Optical Disc Tray Does Not Open for Removal of a CD, DVD, or BD

Keys
NOTE: Refer to the illustration that most closely matches your computer.
Component Description
(1) esc key Displays system information when pressed in combination with the
fn key.
(2) fn key Executes frequently used system functions when pressed in
combination with a function key, the num lk key, or the esc key.
(3) Function keys Execute frequently used system functions when pressed in
combination with the fn key.
(4) Embedded numeric keypad keys When the keypad has been enabled, the keys can be used like the
keys on an external numeric keypad when pressed in combination
with the fn and num lk keys.
Linux 27