Can I Use My Laptop as a Second Monitor?

You could give Video-Over-IP methods a shot—they're often free and can let you use your laptop for this purpose. Just search for "use my laptop as a second monitor using video over IP" for lots of guides, like on Tom's Hardware.

While it's technically possible, it's not the best option. Laptops usually lack video input ports, making traditional connections impossible. You can use a video capture card or remote access software, but those methods can be clunky and introduce lag. If you really need a second monitor, consider picking up a used one instead—it's often cheaper and easier.

Honestly, just get a second-hand monitor. They're available for really cheap, sometimes as low as $20 from thrift shops. It's a hassle to set up your laptop as a monitor when you could just have a dedicated display that works seamlessly.

If you’re looking to use the laptop while doing something else on your main PC—like referencing stuff while working—Mouse without Borders is great. It's a Microsoft tool that lets you control both devices with a single set of keyboard and mouse, making it really handy for multitasking.

You can technically make it work with a capture card, but be prepared for some noticeable lag. For a smoother experience, second-hand monitors are definitely the way to go instead. They're often super inexpensive and much less frustrating to deal with.