Memory fails when case is closed completely


on my laptop I initially got a report of failed memory (and internal display. The last two report LEDs were red, the binary output was 0x3c). While trying individual slots and bars I got it to work, independet of which ones I used. As soon as I close everything down, it doesnt boot again. I checked again multiple times, the best I achieved so far is a largely closed case with visible gaps at the hinges. I was unable to identify any potential causes visually, everything appears to be in order.

Im a bit lost here. Is my unit faulty? Or are there known causes for what Im experiencing?