Solved! can't see second screen

Mar 11, 2018
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I can't get my laptop (Dell Inspiron 15 5555) to recognize my second screen (AOC 2429W). It works under Linux (ubuntu 16.04 LTS) , but not under windows 8.1. I know it's a driver problem, but I can't even get my computer to look for a second screen. I've got the driver installed under "monitor" in Display. I've tried to update the display adapter, but it says I've got the most up to date, and it can't detect another screen.

Any Ideas?