1. Make a U disk boot disk with the Chinese cabbage U disk boot disk making tool, download the genuine system image or the pure version image, download the image file with ISO suffix and copy it to the U disk root directory.
2. Press F2 to enter BIOS setup. Select the boot option—the secure boot is set to "Disabled" and the operating system mode selection is set to CSM operating system. Select the fast Bios mode set to "Disabled" under the advanced menu, and then press F 10 to save and exit.
3. Restart the computer and press F 10 to start the fast startup. Select a USB flash drive to boot into Windows PE, format the partition with hard disk tools, set the main boot partition to drive C, and restore the image file to drive C with third-party restore software.