Yes, it is possible to use a laptop as a monitor for the Nintendo Switch. This can be done by connecting the HDMI output of the Switch to the HDMI input of the laptop. The audio output of the Switch can also be connected to the audio input of the laptop, if desired. Doing this will allow you to play your Nintendo Switch games on your laptop's screen. There are a few things to keep in mind, however. First, not all laptops have HDMI inputs. Second, even if your laptop does have an HDMI input, it may not support video input from devices like the Nintendo Switch. Third, even if your laptop does support video input from external devices, there may be some lag between what is happening on the Switch and what is being displayed on your laptop's screen. Fourth, battery life will likely be shorter when using your laptop as a monitor for the Nintendo Switch since more power is required to drive both the internal display and external display simultaneously. Overall, using a laptop as a monitor for the Nintendo Switch is possible but there are some potential drawbacks that should be considered before doing so.