I bought an Acer Aspire 3 laptop exactly a year ago. Didn't have any issues besides the charger breaking but i got that fixed under warranty. Last week i started to hear a strange popping/cracking sound when opening and closing the laptop. I noticed it was coming from the back of the laptop, but I didn't think much of it. Today, I opened the laptop, same popping/cracking sound as before but then I noticed that the back of the laptop near the hinges cracked. I immediately closed the laptop and I'm now scared to open it because it might completely snap if I do. The crack is on the right side but when I start to open the laptop I can a see another crack forming on the left side. I always open the laptop gently, it has never fallen or anything like that. What could be the cause of this? The laptop is still covered under warranty but I don't know if they'll believe me that I really didn't cause this. The laptop is also insured for any accidental damage so if the warranty fails, I'll still hopefully get it fixed. I'm really disappointed and I'm taking it back to the store tomorrow.
[Edited the thread to add issue detail]