Where is the wireless function keyfor HP pavilion dv4-1140?

The wireless function key on the HP Pavilion dv4-1140 is typically located on the top row of the keyboard, often as a secondary function on one of the F keys (such as F12). It usually has a wireless symbol that looks like a wave or antenna. To activate or deactivate the wireless feature, you may need to hold down the "Fn" key while pressing the designated function key. If you're unsure, refer to your user manual for specific instructions.