Your question needs clarification. While we can mirror the PC to the ROKU (read https://www.support.com/how-to/how-to-screen-mirror-from-windows-10-to-roku-12655 ) you asked to mirror the internet so I'm unsure what you meant by that.
I installed a Roku streaming stick plus and hoped I could browse the internet on my Roku tv model # 32S321-Series 3. My computer is an HP PC 6823W-64bit -4 GB service pack 1. I don't have a Win 10 laptop or Android phone.

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