Seeking the ultimate solution: the problem of netbook dual system (see below)
It's simple. Just use a WINPE system directly, erase the previous system through a USB flash drive or a mobile hard disk, and install WIN7 directly. If you can't install it, you can go to the Vision forum, where there are detailed tutorials, whether it's CD installation or direct hard disk installation. If you are a novice, it is recommended to install.