How to troubleshoot hardware and driver issues for electronic whiteboard touch drift in meeting rooms

The electronic whiteboard in the office acted up again today. When people clicked the top-left corner, the cursor drifted to the middle, and the meeting almost couldn't continue. At first, some said the screen was broken, while others blamed Teams Room, but I noticed the display was fine; the real issue was the touch coordinate mapping. I first swapped the HDMI and USB cables to spare ports to…