How to upgrade Win10 system in Win7

Now everyone is using Win7 and is looking forward to the upcoming Win10. How to upgrade Win7 to Win10 Technology Preview? For this very high-profile issue, this article will introduce.
There is news now that some Win7 users have received the update hint of Win10 Technology Preview through system update.
At present, it is not certain whether Microsoft will provide a Win10 preview update update to Win7 users. Now through Win7 system update, you can directly view the update option of Windows 10 Technology Preview, which can be downloaded and installed directly like the normal system upgrade patch. The system will then automatically upgrade to the Win10 Technology Preview without manual intervention. However, the caveat is that Win7 users need to join the Windows Insider Program and download a small file before they receive the Win10 update.
Everyone wants to experience the Win10 system. Win7 upgrade to Win10, if you have the update option, you can download and install like the upgrade patch.