Download Windows 10 Technical Preview

	Follow these steps to download Technical Preview:                                                    Sign up for the Windows Insider Program, if you haven't already.                                           Read the system requirements.                                           Click Start upgrade now, and then follow the instructions to install the preview on this PC through Windows Update.                                           If you want to install the preview on another PC, you can download the ISO files instead.                   Start upgrade now                                  Important                Remember, trying out an early build like this can be risky. That's why we recommend that you don't install the preview on your primary home or business PC. Unexpected PC crashes could damage or even delete your files, so you should back up everything.                 After you install Windows 10 Technical Preview, you won’t be able to use the recovery partition on your PC to go back to your previous version of Windows.                      原始網頁