1. Download zip file from this website
ProTEXt is a TEX distribution for Windows, based on MiKTEX.
https://ctan.org/tex-archive/systems/windows/protext
2. Unzip that zip file
3. Open %UnzipFolder%\MiKTeX\setup, run the corresponded setup executable file.
4. Download latest TexStudio. then install TexStudio, keep all setting default.
5. Installation is done.