Before We Begin Before you can cast or stream from your Windows 10 laptop, desktop or tablet you’ll need the necessary equipment. Your Windows 10 device only acts as a transmitter.

If you need to expand your screen real estate, and you don't have a second monitor, you can use another Windows 10 computer, and here's how.

To cast to Roku from a PC in Windows 11, make sure that your PC supports Miracast technology and that you have enabled screen mirroring on your Roku device.