RE: rubber seal around screen coming off - latitude e7440
Thanks for posting.
Apologies that your computer is not working the way you expected. If you are still under warranty, please call the Tech Support team for assistance. If you are no longer under warranty, you may need to replace the LCD or the screen bezel. It looks pretty easy to do. Here's a video. Parts are pretty inexpensive here, and they have a tutorial.
Hope this helps, if you need further assistance, please contact me privately. Thanks.