How do I install Windows 10 on my Surface Pro 3?

Insert a Windows 10 bootable USB drive into the USB port on your Surface. Press and hold the volume-down button. Press and release the power button. When the Surface logo appears, release the volume-down button.

Can you run Windows on Surface Pro?

Surface Pro devices are optimized for 64-bit versions of the operating system. On these devices, 32-bit versions of Windows are unsupported. If a 32-bit version of the operating system is installed, it may not start correctly.