Oh, cr@p: I just noticed this about an hour ago. Pretty sure I would have noticed it earlier if it was like that. I purchased the SP2017 in Thailand (where I live) in Aug 2017, so the "Standard limited warranty coverage" for "One year of warranty for hardware defects and malfunctions" has passed. What are the chances that the bulge is caused by an expanding battery? ISTR reading here that someone who had an expanding battery was advised by Microsoft to return the computer for replacement (repair?). Although I live in Thailand, I just landed in Merida, Mexico where I'll be until Christmas. Fat chance of finding a Microsoft service center, or even a Microsoft store, here. What are my viable and best options? What would be the best e-mail address at Microsoft to contact? [edited to add:] PS: I googled for Surface Support and was lead to the Microsoft Support page with my registered devices, and even though my credit card receipt verifies I purchased the SP2017 on 23-Aug-2017, this is what the Microsoft page shows, so I may be covered by warranty still: I spent about an hour in an online chat and their "Escalation" people will contact me within 72 hours for resolution. The online chat agent tried to call me at my Mexico cell phone, but kept getting a single ring and then a busy signal, so that attempt was aborted but I give them credit for even trying.