If you have problems finding the file:
Open Explorer. You can do that by clicking a random folder. Alternatively, it should be in your taskbar as a folder icon.
On the left side of Explorer, there is a section that has shortcuts to folders. Downloads should be one of them.
If it isn't there, Go to C:\Users , click at your user, and then Downloads.
Alternatively, if you use Chrome:
Go into Downloads or press Ctrl+J.
The file is there. There is a button to open the folder it is in. If your file isn't in Downloads or if you cannot find Downloads, do this.
Finally:
Press Win+R, type "Downloads". It should open regardless of your OS's language.