Dell Inspiron 23 (2350, Mid 2013) - Manual (Page 98)

• Change the system configuration information.
• Set or change a user-selectable option, such as the user password, type of
hard drive installed, enabling or disabling base devices, and so on.
Entering System Setup
1 Turn on (or restart) your computer.
2 During POST, when the DELL logo is displayed, watch for the F2 prompt
to appear and then press F2 immediately.
NOTE: The F2 prompt indicates that the keyboard has initialized.
This prompt can appear very quickly, so you must watch for it, and
then press F2. If you press F2 before the F2 prompt, this keystroke
is lost. If you wait too long and the operating system logo appears,
continue to wait until you see the operating system’s desktop. Then,
turn off your computer and try again.
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