Hey there! I stumbled upon this post while troubleshooting my own BSOD issues with an Arduino Nano clone. It sounds like we're in the same boat! I was also using the Serial Monitor at 115200 baud rate, and I'm planning to try lowering the speed to see if that resolves the problem. Fingers crossed that it works for both of us! If you find a solution, please share it here. I'll do the same. Good luck!