Many laptops are built with tiny microphones embedded in the case, reducing the number of peripherals required when Skyping or using voice commands. Because the mics are so small, however, they can often be difficult to locate. You may find that you don't know where to direct your voice when speaking for best reception, or even are unsure whether your laptop has a built-in mic at all. But as long as you know where the standard positions are for embedded microphones, finding that elusive sound-hole should be fairly easy.
Consult your laptop's documentation and included leaflets for information. If your laptop has a microphone, it will generally be mentioned here, and the manual may even include a diagram showing where on the laptop's body the mic is located.
Examine the edges of the LCD screen for a small hole labeled "mic" or with a microphone icon. Integrated microphones are often found at the top of the display, especially when there is an embedded webcam directly next to it.
Look at the edges of your laptop's body. Some laptop models position the internal microphone above the keyboard, just below the hinge.