Valve has uploaded the drivers a user needs for getting Windows on the Steam Deck. Currently, only Windows 10 is available and dual-boot is not possible yet--which means if you go for installing Windows, that's the only OS you're stuck with until you uninstall it. Valve is working on a way to get Windows 11 and dual-boot working on the Steam Deck, so users can expect those features in the future.

Drivers

• GPU Driver download
• WiFi Driver download
• Bluetooth Driver download
• Audio Driver is not yet available, but USB-C or Bluetooth can provide audio. The speaker and 3.5mm port will not transmit sound if you install Windows.

For installing Windows, users can go the route of more irreversible SSD installation or a safety-first microSD card (or USB) installation. Tom's Hardware does a great job of digging into how installation via either method works.

Either way, the basic method is to get the Window drivers on a USB (or microSD card). Navigate to the Steam Deck's boot menu by first powering down, and then while holding the volume button down, hit the power button again. In the boot menu, you'll choose the USB (or microSD card) to install Windows from. Follow instructions from there.