If you want to reinstall the system on your computer yourself, you do not need to understand the administration. All actions are performed quite simply - you only need to press certain keys in a timely manner.
Necessary
Computer, Windows multiboot disk
Instructions
Step 1
Make sure the system disk is indeed multiboot. To do this, you need to insert it into the drive. If a window with files and folders opens, the disk is not. If a window for installing the system appears on the desktop, the media is multiboot. After you are convinced of this, proceed to the installation of the system. To do this, close the window that opens, and then restart your computer. However, before you do this, copy all the information you need to removable media.
Step 2
At the time of the reboot, you need to constantly press the F9 key until the system prompts you to confirm starting from the disk. You will have no more than three seconds to confirm. During this time, you need to press the "Enter" button. After pressing the button, a menu will appear on the monitor in which you need to select the system installation option. The computer will be restarted, after which a section will open in front of you, where you can select the path to install the system.
Step 3
Delete all sections following the prompts at the bottom of the window. After deleting, create the required number of new partitions (this way you divide the hard disk into several sectors). Leave a space of 30 gigabytes for the system partition and assign the OS installation to it. Next, you will be offered several ways to format the system partition. After choosing normal mode, start the installation. The system will automatically start installing the OS immediately after formatting the sector. You just have to wait for the installation to complete. Finally, you will need to enter the username and computer name, as well as set other parameters that can be left as default.
Step 4
Upon completion of the installation of the operating system, install the necessary drivers and codecs on the computer.