1. Click this link to Microsoft website.
2. Select your language and click the Download button.
3. The page will open again with the new language settings. Click the "Download" button again.
4. Chose the installation file which fits your OS settings and click the "Next" button.
If you are not sure which system type you have, click the "Start" button on your PC, right click on "This PC", and select "Properties". Look at the "System" section for the information.
5. Open the downloaded file and install PowerBI Desktop.