This process of formatting the hard disk and reinstalling Windows is necessary when the operating system is completely damaged either by a virus or a failure that we cannot identify, as well as is part of the preventive maintenance that is performed on the computer (once year).
The procedure as you will see is not complicated at all since the installer CD does everything by itself, all we will do is press a few keys and write the Windows serial number.
It should be clarified that when formatting the hard disk, more properly the unit where the OS (operating system) is installed, only what is in it is erased and not everything from the other units, for which it is recommended to do a copy of the important documents or files that are in it (usually this is the unit C), let's avoid copying the installed programs, it is better to get the installers.
Now there is a simple and clear manual on the net with which I have learned several years ago, so I want to share it with you, it contains illustrative images which makes learning easier.
It is recommended to read it several times to be clear about the idea before carrying out said formatting, also have the Windows serial at hand to avoid problems.
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