I have only Windows Home premium, so at a time only one Language can work and not able to switch between different languages without change settings (Professional and Ultimate has feature for Multiple Language).
I am using Punjabi Language for Windows Desktop. Translation is better than Windows XP, but still it needs some improvement (which I would like to say not enhancement, but problematic). Dialog Box size different from en_US Windows and Few dialog box/window are not appear proper. Translation sometime seems like too low-level (pure Punjabi) to use actually. More over Most translation is just copy of Hindi, which sometime don’t make any sense in Punjabi.
Few Screenshots are below.
ਯਾਚਨਾ (what is this?)
Just providing Translation without any Review from actual computer users, it is bad (only good to complete formality for business deals)