This message was posted on behalf of Intel Corporation
I understand you are trying to connect a third monitor to your computer.
Let me apologize for any inconvenience this issue may be causing to you.
According to Costco’s website that computer comes with just one video port. Since there is just one video port the system has been designed to work with up to two displays (built-in and/or HDMI). This is hardware limitation of the motherboard itself. We cannot guarantee the system will be able to recognize the USB to VGA adapter. Our graphics controller will only recognize the video ports that come embedded to the motherboard.
For the blue screen of death issue you are having with the AMD Radeon R7 M460 GPU I recommend contacting Lenovo* so they can provide more advanced troubleshooting steps for it. This link will give you their contact information http://support.lenovo.com/cr/en/contactus