I had the same issue with mine and its only a month old. the thumping noise it does when it close adds pressure to the glass and the surface book is really hard to open and one morning i opened and and my finger slid to the glass and it cracked. microsoft said there was no repair to the unit and only replacement, and its gonna cost $550. i couldnt get an extended warranty on the unit and now stuck with the broken glass. im so careful when i got the tablet and problem happens when ur trying to open it, it ridiculous how weak the glass is, and i debated wheather or not i should get the surface book or the mac book pro for my business the tablet option made the decision for me. i just started my business and i told them that and i have no extra to try to repair it, i even asked if they can offer my the extended warranty since best buy wont and it passed the 15 days. and they won't offer it to me to help out. i almost cried since its a lot of money invested and now i cant even use it on the field. i threw away that money and for microsoft not try to help out is disgusting. i just wish theres a replacement part but so far there isnt for the book and only for the surface pros. If anyone finds out if a replacement glass comes out please let me know.