How to reinstall the system after the win10 upgrade

1. Ensure that Win10 is activated
Normally, as long as the system can be activated automatically after upgrading Windows 10 from Windows7/Windows 8.1, the new installation of Win10 can also be activated automatically, so first you must ensure the system Already activated. You can check the activation status in System Settings — Updates & Security & mdash; Activation, and you can also see the system version here.

2. Use the correct ISO image
Make sure that the image version used is the same as the version of the system you are using during a fresh installation. If you upgrade to Win10 using Microsoft's official tools, create it. With an ISO image, you don't have to worry about this. If you want to download the image yourself, you need to pay attention.
Mirror can be downloaded from "Win10 official version of the official iso image download address Daquan" or "win10 official version ESD upgrade image official download address Daquan" download.
In addition, there is no limit to the choice of system architecture, 32-bit or 64-bit. Note, however, that if your computer is UEFI booted, the image must be consistent with the system architecture currently in use. To determine if it is booting for UEFI, refer to "UEFI or Legacy BIOS? How to determine the Windows boot type". In general, tablets, notebooks, and desktops with Win8/Win8.1 pre-installed default to UEFI boot.
3, pre-installation preparation
• During installation, you only need to format the partition where the system is located (usually C drive), so you need to back up all personal files in the partition where the system is located, by default The content in the desktop is also in the partition where the system is located.
• It is recommended to download the NIC driver according to the NIC model in advance to avoid the problem of not being able to connect to the network after reinstalling the system.
4, make a U disk boot disk or boot from the hard disk to install Win10
can refer to the following methods to install a new system:
"win10 hard disk installation method win10 hard disk installation tutorial (with win10oem version download)"
installation When the following two screens appear in the process, skip the key input.

Click “Skip”

Click “Speak later>
5, Network Activation
When you upgrade from Win7/Win8.1 to Win10, Microsoft Your activation information will be saved on the server. After reinstalling Win10, the system needs to compare the hardware information with the information stored on the server. After the comparison is passed, it will be activated automatically, so you need to connect to the network.
Note that it may take a while for the network to be activated automatically after networking.