Please connect the monitor directly to the laptop to ensure that the monitor can display during the boot process. If the monitor does not display, it means the behavior on your laptop is that the external monitor will not display during the BIOS boot phase. Please contact your laptop manufacturer to change this behavior. If the monitor displays well, that means CV211 has some issue with your Laptop under boot process please contact us for more information and help. https://eservice.aten.com/eServiceCx/Common/FAQ/askQuestion.do?type=None |