Just want to show you how you can enable Language bar at welcome screen in windows 7 at the left corner topside.
Log into your windows 7 computer 1) Go to control panel ,click on Region and Language shown below with screen shots.
Once you have done the all above changes ,Log off the computer. Next time,when you login ,you should be able to see Language bar on the left side top corner to select which Language.
Thank you!