Is there an error message? If so please quote it word-for-word.
Does Lightroom actually open for a few seconds, where you can see your photos and the menus and side panels?
what pops up is a little Windows pop up that indicates that Lightroom has stopped working and will close the program. I'll get notified if Windows finds a solution. I think I saw the side panels for a brief moment.
i uninstalled and reinstalled lightroom and all is well.