2.When you are using a public computer and u download a file which you can't find the location.
Press (Ctrl + J) to open the download library.
Right click on the target file and select "open containing folder" it will open the exact location of your file for you.....
3.When using a public computer make sure to clear your browsing history before leaving, you can do that by
Pressing "ctrl + H" then you right click on the target history and select delete...
Thanks for your time..
Have a nice day