jay007 0 Posted June 1, 2011 I have a system with xp embeded installed. when the computer turns on and tries to load the dvr software i get Cannot open open COM4 port for MCU Communication. MCU serial comm error anyone any ideas??? Share this post Link to post Share on other sites
Soundy 1 Posted June 5, 2011 What DVR? What software? Is there supposed to be something connected to the serial port? Is it the DVR software trying to access it, or something else? Is this just a non-critical error message, or is it actually preventing the system from working? Share this post Link to post Share on other sites
