The fingers slide to the left on the right side of the screen, and if you don't install the corresponding win8 version, you can only install the win864 bit if you don't convert it into the MBR format. If you really need to reinstall the system, it is recommended to follow the following actions. If you don't backup the driver in advance, click settings -- change the computer settings -- update and restore -- restore, then there will be an activated case. And even installing the system driver is also a big problem. Surfacepro suggests not to try to reinstall the system. After restoring the computer without affecting your files, click "start" and open the super button. The hard disk partition of surfacepro is GPT format.