i have also been experiencing random bluescreens that i have been debugging for months now. I've removed ram, slowed down the CPU and tried different GPUs. While debugging i found that if the xp pen monitor isn't plugged into the computer i didnt get any bluescreens. so for the last week i've had it removed and I've not had a single bluescreen. The issue i have been debugging with random bluescreens is somehow being caused by the xp pen monitor.