Only one Roku (2 XS) ever had Bluetooth, and it was only for its remote. Screen mirroring or casting has always been hit or miss with Windows. Usually a miss. Windows uses Miracast, which has some specific hardware requirements that you should be able to find online. But as I said, it does't always with with a Roku.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.